21131815 (number)

21131815 is an odd 8-digits composite number following 21131814 and preceding 21131816. In scientific notation, it is written as 2.1131815 × 10^7. The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors. There are 16871040 positive integers (up to 21131815) that are relatively prime to 21131815.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-one thousand eight hundred fifteen

Notation

Scientific notation 2.1131815 × 10^7
Engineering notation 2.1131815 × 10^6

Prime Factorization of 21131815

Prime Factorization 5 × 523 × 8081

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21131815
Product of the distinct prime numbers

The prime factorization of 21131815 is 5 × 523 × 8081. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 5, 67, 100, 579, 806, 8087, 1113, 65301, 33262, 705309, 659973, 5319855, 8757020, 34427837, 21250980, 607092507, 665339345, 710179215, 8725732081

Basic calculations (n = 21131815)

Multiplication

n×y
n×2 42263630
n×3 63395445
n×4 84527260
n×5 105659075

Division

n÷y
n÷2 10565907.5
n÷3 7043938.3333333
n÷3 5282953.75
n÷5 4226363

Exponentiation

ny
n2 446553605194225
n3 9.4364881725474E+21
n4 1.9941012231196E+29
n5 4.2138978138237E+36

Nth Root

y√n
2√n 4596.9353921934
3√n 276.46846419426
4√n 67.800703478602
5√n 29.173421044286

Divisors of 21131815

1, 5, 523, 2615, 8081, 40405, 4226363, 21131815

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21131814
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21131815 can be divided by 8 positive divisors. The sum of these divisors (counting 21131815) is 1, the average is 0.125.

Base conversion 21131815

Base System Value
2 Binary 1010000100111001000100111
3 Ternary 1110202121101211
4 Quaternary 1100213020213
5 Quinary 20402204230
6 Senary 2032532251
8 Octal 120471047
10 Decimal 21131815
12 Duodecimal 70b1087
16 Hexadecimal 1427227
20 Vigesimal 6c19af
36 Base36 ckxev

Cryptographic Hash Functions

md5 46076c07d5c8d1b9d8d374a42c8c86b4
sha1 4a56e75b772a3eec8f38e542cf2f33f81bdad30e
sha256 d6c1cdbfce65aaad953f67615dd350b9eaa7e72cc73358a0e14fe7048cd29f12
sha512 f92997519f33dfb1a26aea72c29c953a3b04cf703c8aafbf789c8c0e283116b9847fa955a08424ed807618b9cbdcafc3a4b6d9de0f638c19644b02b068a510ea
ripemd-160 576840183f8a8892b878881715b9792263e8de8a

21131815 as geometric shapes

Circle

Radius = n
Diameter 42263630
Circumference 132775109.52204
Area 1.4028895255122E+15

Sphere

Radius = n
Volume 3.9527469224749E+22
Surface area 5.6115581020489E+15
Circumference 132775109.52204

Square

Length = n
Perimeter 84527260
Area 446553605194225
Diagonal 29884899.370559

Cube

Length = n
Surface area 2679321631165350
Volume 9.4364881725474E+21
Space diagonal 36601377.236146

Equilateral Triangle

Length = n
Perimeter 63395445
Area 1.9336338312486E+14
Altitude 18300688.618073

Triangular Pyramid

Length = n
Surface area 1.9336338312486E+14
Volume 1.1121007962325E+21
Height 9961633.1235197