21087912 (number)

21087912 is an even 8-digits composite number following 21087911 and preceding 21087913. In scientific notation, it is written as 2.1087912 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 16 positive divisors. There are 7029296 positive integers (up to 21087912) that are relatively prime to 21087912.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand nine hundred twelve

Notation

Scientific notation 2.1087912 × 10^7
Engineering notation 2.1087912 × 10^6

Prime Factorization of 21087912

Prime Factorization 2 × 2 × 2 × 3 × 878663

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5271978
Product of the distinct prime numbers

The prime factorization of 21087912 is 2 × 2 × 2 × 3 × 878663. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 3, 18, 11, 791, 735, 5374, 1200, 33787, 89799, 154904, 111245, 1387277, 3487767, 95352811, 13932637, 289369561, 55774762, 813926136, 6227995716

Basic calculations (n = 21087912)

Multiplication

n×y
n×2 42175824
n×3 63263736
n×4 84351648
n×5 105439560

Division

n÷y
n÷2 10543956
n÷3 7029304
n÷3 5271978
n÷5 4217582.4

Exponentiation

ny
n2 444700032519744
n3 9.3777951521735E+21
n4 1.9775811892306E+29
n5 4.1703058091351E+36

Nth Root

y√n
2√n 4592.1576627986
3√n 276.2768698228
4√n 67.765460691997
5√n 29.161288944716

Divisors of 21087912

1, 2, 3, 4, 6, 8, 12, 24, 878663, 1757326, 2635989, 3514652, 5271978, 7029304, 10543956, 21087912

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21087911
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21087912 can be divided by 16 positive divisors. The sum of these divisors (counting 21087912) is 1, the average is 0.0625.

Base conversion 21087912

Base System Value
2 Binary 1010000011100011010101000
3 Ternary 1110200101011210
4 Quaternary 1100130122220
5 Quinary 20344303122
6 Senary 2031553120
8 Octal 120343250
10 Decimal 21087912
12 Duodecimal 708b7a0
16 Hexadecimal 141c6a8
20 Vigesimal 6bfjfc
36 Base36 cjzjc

Cryptographic Hash Functions

md5 912da47e98b032dc3c82e09c5465c085
sha1 595dfc099b520b78a6a47ddc7fc47e8eaf35be85
sha256 469021dd708a7efc93e46acb8f1a3a3ededbf8ca826a66579952a29053b8a6e8
sha512 d926528dafac27598d3ed9f0a543eb4612ca11db49189b554af554ae4796a42984356ddff4e9302bbe2fc42f9dfdb3ba1cac31ad1a82a8dbfab252c64240f035
ripemd-160 2228e371a680c7ef456f265f5bd8efb8e81e6251

21087912 as geometric shapes

Circle

Radius = n
Diameter 42175824
Circumference 132499258.8375
Area 1.3970663552152E+15

Sphere

Radius = n
Volume 3.9281616475918E+22
Surface area 5.5882654208607E+15
Circumference 132499258.8375

Square

Length = n
Perimeter 84351648
Area 444700032519744
Diagonal 29822811.15253

Cube

Length = n
Surface area 2668200195118464
Volume 9.3777951521735E+21
Space diagonal 36525335.009541

Equilateral Triangle

Length = n
Perimeter 63263736
Area 1.9256076261293E+14
Altitude 18262667.504771

Triangular Pyramid

Length = n
Surface area 1.9256076261293E+14
Volume 1.1051837574467E+21
Height 9940937.0508434