21087856 (number)

21087856 is an even 8-digits composite number following 21087855 and preceding 21087857. In scientific notation, it is written as 2.1087856 × 10^7. The sum of its digits is 37. It has a total of 6 prime factors and 20 positive divisors. There are 10462400 positive integers (up to 21087856) that are relatively prime to 21087856.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand eight hundred fifty-six

Notation

Scientific notation 2.1087856 × 10^7
Engineering notation 2.1087856 × 10^6

Prime Factorization of 21087856

Prime Factorization 2 × 2 × 2 × 2 × 131 × 10061

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2635982
Product of the distinct prime numbers

The prime factorization of 21087856 is 2 × 2 × 2 × 2 × 131 × 10061. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 4, 83, 36, 805, 978, 5867, 5359, 11668, 56663, 896969, 695482, 686258, 1576546, 57747906, 89444387, 396018022, 681497166, 1324664620, 2149715088

Basic calculations (n = 21087856)

Multiplication

n×y
n×2 42175712
n×3 63263568
n×4 84351424
n×5 105439280

Division

n÷y
n÷2 10543928
n÷3 7029285.3333333
n÷3 5271964
n÷5 4217571.2

Exponentiation

ny
n2 444697670676736
n3 9.3777204427664E+21
n4 1.9775601830531E+29
n5 4.1702504371558E+36

Nth Root

y√n
2√n 4592.1515654429
3√n 276.27662526692
4√n 67.765415703314
5√n 29.161273456849

Divisors of 21087856

1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10061, 20122, 40244, 80488, 160976, 1317991, 2635982, 5271964, 10543928, 21087856

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21087855
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21087856 can be divided by 20 positive divisors. The sum of these divisors (counting 21087856) is 1, the average is 0.05.

Base conversion 21087856

Base System Value
2 Binary 1010000011100011001110000
3 Ternary 1110200101002201
4 Quaternary 1100130121300
5 Quinary 20344302411
6 Senary 2031552544
8 Octal 120343160
10 Decimal 21087856
12 Duodecimal 708b754
16 Hexadecimal 141c670
20 Vigesimal 6bfjcg
36 Base36 cjzhs

Cryptographic Hash Functions

md5 0fbb1601d18051e193d89fb08bd0dd9d
sha1 4df884ba38301cbb512a9c28e90d11dd8341283e
sha256 e9ed149d3b53f8d93fb1f7d43031d1aa6ffd9cb62ec1db86bcd68c7d6672d5cc
sha512 83e2b94b5de7d5b6f11d7e6d79a6a2feede0be9574ee4813f30ee231ed885d40f029f1d64b098045046199912256c2795f968d0210d2566bd61c69eab2aa1a9f
ripemd-160 331b5c95deed9c3347cc8386b363ddce9bf7e526

21087856 as geometric shapes

Circle

Radius = n
Diameter 42175712
Circumference 132498906.97912
Area 1.3970589352665E+15

Sphere

Radius = n
Volume 3.9281303533885E+22
Surface area 5.5882357410661E+15
Circumference 132498906.97912

Square

Length = n
Perimeter 84351424
Area 444697670676736
Diagonal 29822731.956571

Cube

Length = n
Surface area 2668186024060416
Volume 9.3777204427664E+21
Space diagonal 36525238.014696

Equilateral Triangle

Length = n
Perimeter 63263568
Area 1.9255973990491E+14
Altitude 18262619.007348

Triangular Pyramid

Length = n
Surface area 1.9255973990491E+14
Volume 1.1051749528586E+21
Height 9940910.6521903