2870 (number)
2,870 (two thousand eight hundred seventy) is an even fourdigits composite number following 2869 and preceding 2871. In scientific notation, it is written as 2.87 × 10^{3}. The sum of its digits is 17. It has a total of 4 prime factors and 16 positive divisors. There are 960 positive integers (up to 2870) that are relatively prime to 2870.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 4
 Sum of Digits 17
 Digital Root 8
Name
Short name  2 thousand 870 

Full name  two thousand eight hundred seventy 
Notation
Scientific notation  2.87 × 10^{3} 

Engineering notation  2.87 × 10^{3} 
Prime Factorization of 2870
Prime Factorization 2 × 5 × 7 × 41
Composite numberω(n)  Distinct Factors  4  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  2870  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 2,870 is 2 × 5 × 7 × 41. Since it has a total of 4 prime factors, 2,870 is a composite number.
Divisors of 2870
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  6048  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  3178  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  378  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  53.572380943915  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  7.5925925925926  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 2,870 can be divided by 16 positive divisors (out of which 8 are even, and 8 are odd). The sum of these divisors (counting 2,870) is 6,048, the average is 378.
Other Arithmetic Functions (n = 2870)
φ(n)  Euler Totient  960  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  120  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 417  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 960 positive integers (less than 2,870) that are coprime with 2,870. And there are approximately 417 prime numbers less than or equal to 2,870.
Divisibility of 2870
m  2  3  4  5  6  7  8  9 

n mod m  0  2  2  0  2  0  6  8 
The number 2,870 is divisible by 2, 5 and 7.
Classification of 2870
By Arithmetic functions
 Arithmetic
 Abundant
Expressible via specific sums
 Polite
By Powers
 Square Free
Base conversion (2870)
Base  System  Value 

2  Binary  101100110110 
3  Ternary  10221022 
4  Quaternary  230312 
5  Quinary  42440 
6  Senary  21142 
8  Octal  5466 
10  Decimal  2870 
12  Duodecimal  17b2 
16  Hexadecimal  b36 
20  Vigesimal  73a 
36  Base36  27q 
Basic calculations (n = 2870)
Multiplication
n×yn×2  5740 

n×3  8610 
n×4  11480 
n×5  14350 
Division
n÷yn÷2  1435.000 

n÷3  956.666 
n÷4  717.500 
n÷5  574.000 
Exponentiation
n^{y}n^{2}  8236900 

n^{3}  23639903000 
n^{4}  67846521610000 
n^{5}  194719517020700000 
Nth Root
^{y}√n^{2}√n  53.572380943915 

^{3}√n  14.211087023336 
^{4}√n  7.3193156062514 
^{5}√n  4.9155982319692 
2870 as geometric shapes
Circle
Radius = nDiameter  5740 

Circumference  18032.741831605 
Area  25876984.528354 
Sphere
Radius = nVolume  99022594128.5 

Surface area  103507938.11342 
Circumference  18032.741831605 
Square
Length = nPerimeter  11480 

Area  8236900 
Diagonal  4058.7929240108 
Cube
Length = nSurface area  49421400 

Volume  23639903000 
Space diagonal  4970.9858177227 
Equilateral Triangle
Length = nPerimeter  8610 

Area  3566682.324216 
Altitude  2485.4929088613 
Triangular Pyramid
Length = nSurface area  14266729.296864 

Volume  2785989286.3154 
Height  2343.3451872626 
Cryptographic Hash Functions
md5  327708dd10d68b1361ad3addbaca01f2 

sha1  635c3f2335ce25161381b7fe50494b8dc6f5f458 
sha256  72a2d4365f37780690ee9d05b9a173e9036187fbfd5b5ae61785c5d5b0bf8a8a 
sha512  72b2c320e49168a555176ad6eb8de1e18ef1ebcc5b61a1062680eba7fd0605d674988ff06d4951c52fccfa7f63bb491df6f167f33b6889ad08455825b56d43d0 
ripemd160  6ef28282d0b6ceaa10c5480f4900705724376278 