21087913 (number)

21087913 is an odd 8-digits composite number following 21087912 and preceding 21087914. In scientific notation, it is written as 2.1087913 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 16079760 positive integers (up to 21087913) that are relatively prime to 21087913.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1087913 × 10^7
Engineering notation 2.1087913 × 10^6

Prime Factorization of 21087913

Prime Factorization 7 × 11 × 47 × 5827

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21087913
Product of the distinct prime numbers

The prime factorization of 21087913 is 7 × 11 × 47 × 5827. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 3, 4, 23, 986, 963, 5949, 1991, 3944, 71007, 407222, 373678, 5313225, 9715315, 81731711, 8266598, 161152040, 453255951, 6643820832, 8520800506

Basic calculations (n = 21087913)

Multiplication

n×y
n×2 42175826
n×3 63263739
n×4 84351652
n×5 105439565

Division

n÷y
n÷2 10543956.5
n÷3 7029304.3333333
n÷3 5271978.25
n÷5 4217582.6

Exponentiation

ny
n2 444700074695569
n3 9.3777964862737E+21
n4 1.9775815643424E+29
n5 4.1703067979257E+36

Nth Root

y√n
2√n 4592.1577716799
3√n 276.27687418986
4√n 67.765461495366
5√n 29.161289221285

Divisors of 21087913

1, 7, 11, 47, 77, 329, 517, 3619, 5827, 40789, 64097, 273869, 448679, 1917083, 3012559, 21087913

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 -21087912
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 21087913 can be divided by 16 positive divisors. The sum of these divisors (counting 21087913) is 1, the average is 0.0625.

Base conversion 21087913

Base System Value
2 Binary 1010000011100011010101001
3 Ternary 1110200101011211
4 Quaternary 1100130122221
5 Quinary 20344303123
6 Senary 2031553121
8 Octal 120343251
10 Decimal 21087913
12 Duodecimal 708b7a1
16 Hexadecimal 141c6a9
20 Vigesimal 6bfjfd
36 Base36 cjzjd

Cryptographic Hash Functions

md5 19ccb5a50f5d472aee161b27308620e3
sha1 788cdc8d9a7ddf20517994edfd3604fa4a83b824
sha256 e582b774c6be523b342e5b642bbef7de448fa7c7ab4c6ae9440d46124d6ef2d0
sha512 0505955c23f5713eda3140520b1fd34774cc272d6143bc4ffcc08cbe83890173ad3d5bf09786db7cce2429b3c2e9f66762ee475ad1f513caf3676c62f8785c4a
ripemd-160 86abda5f4151fc1d1d29add2f82446c4e7278868

21087913 as geometric shapes

Circle

Radius = n
Diameter 42175826
Circumference 132499265.12068
Area 1.3970664877144E+15

Sphere

Radius = n
Volume 3.9281622064183E+22
Surface area 5.5882659508577E+15
Circumference 132499265.12068

Square

Length = n
Perimeter 84351652
Area 444700074695569
Diagonal 29822812.566744

Cube

Length = n
Surface area 2668200448173414
Volume 9.3777964862737E+21
Space diagonal 36525336.741592

Equilateral Triangle

Length = n
Perimeter 63263739
Area 1.925607808756E+14
Altitude 18262668.370796

Triangular Pyramid

Length = n
Surface area 1.925607808756E+14
Volume 1.1051839146719E+21
Height 9940937.522248