28806 (number)
28,806 (twentyeight thousand eight hundred six) is an even fivedigits composite number following 28805 and preceding 28807. In scientific notation, it is written as 2.8806 × 10^{4}. The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors. There are 9,600 positive integers (up to 28806) that are relatively prime to 28806.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 5
 Sum of Digits 24
 Digital Root 6
Name
Short name  28 thousand 806 

Full name  twentyeight thousand eight hundred six 
Notation
Scientific notation  2.8806 × 10^{4} 

Engineering notation  28.806 × 10^{3} 
Prime Factorization of 28806
Prime Factorization 2 × 3 × 4801
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  3  Total number of prime factors 
rad(n)  Radical  28806  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 28,806 is 2 × 3 × 4801. Since it has a total of 3 prime factors, 28,806 is a composite number.
Divisors of 28806
8 divisors
τ(n)  Total Divisors  8  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  57624  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  28818  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  7203  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  169.72330423369  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  3.9991670137443  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 28,806 can be divided by 8 positive divisors (out of which 4 are even, and 4 are odd). The sum of these divisors (counting 28,806) is 57,624, the average is 7,203.
Other Arithmetic Functions (n = 28806)
φ(n)  Euler Totient  9600  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  4800  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3133  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 9,600 positive integers (less than 28,806) that are coprime with 28,806. And there are approximately 3,133 prime numbers less than or equal to 28,806.
Divisibility of 28806
m  2  3  4  5  6  7  8  9 

n mod m  0  0  2  1  0  1  6  6 
The number 28,806 is divisible by 2, 3 and 6.
Classification of 28806
By Arithmetic functions
 Arithmetic
 Abundant
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 Sphenic
Base conversion (28806)
Base  System  Value 

2  Binary  111000010000110 
3  Ternary  1110111220 
4  Quaternary  13002012 
5  Quinary  1410211 
6  Senary  341210 
8  Octal  70206 
10  Decimal  28806 
12  Duodecimal  14806 
16  Hexadecimal  7086 
20  Vigesimal  3c06 
36  Base36  m86 
Basic calculations (n = 28806)
Multiplication
n×yn×2  57612 

n×3  86418 
n×4  115224 
n×5  144030 
Division
n÷yn÷2  14403.000 

n÷3  9602.000 
n÷4  7201.500 
n÷5  5761.200 
Exponentiation
n^{y}n^{2}  829785636 

n^{3}  23902805030616 
n^{4}  688544201711924496 
n^{5}  19834204274513697031776 
Nth Root
^{y}√n^{2}√n  169.72330423369 

^{3}√n  30.654505785249 
^{4}√n  13.027789691029 
^{5}√n  7.796444493086 
28806 as geometric shapes
Circle
Radius = nDiameter  57612 

Circumference  180993.43595862 
Area  2606848458.1119 
Sphere
Radius = nVolume  1.0012383557916E+14 

Surface area  10427393832.448 
Circumference  180993.43595862 
Square
Length = nPerimeter  115224 

Area  829785636 
Diagonal  40737.835877719 
Cube
Length = nSurface area  4978713816 

Volume  23902805030616 
Space diagonal  49893.455562829 
Equilateral Triangle
Length = nPerimeter  86418 

Area  359307720.23571 
Altitude  24946.727781415 
Triangular Pyramid
Length = nSurface area  1437230880.9429 

Volume  2816972587754.7 
Height  23520.000510204 
Cryptographic Hash Functions
md5  5ee94a1dab24140d186fe48def60b528 

sha1  238de1e13f2106cd05c4d9eaf445d7b406074a29 
sha256  5ffcbc34ab6b0c41c87a2459826be4fe4b9d20f706917b86ac2470eec1b435cb 
sha512  c51903a1604fde2eb72801bb08b2223a8121407b26fde918680075007b24669ad6732ea9243258f70dfb1f59489040001d291bb64286e6afca8c5ecc378ba44c 
ripemd160  ec74481d4836ed0849027affaab6f2ecab84f464 