21131805 (number)

21131805 is an odd 8-digits composite number following 21131804 and preceding 21131806. In scientific notation, it is written as 2.1131805 × 10^7. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 11270288 positive integers (up to 21131805) that are relatively prime to 21131805.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1131805 × 10^7
Engineering notation 2.1131805 × 10^6

Prime Factorization of 21131805

Prime Factorization 15 × 1408787

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21131805
Product of the distinct prime numbers

The prime factorization of 21131805 is 15 × 1408787. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 7, 1, 22, 348, 74, 6575, 1502, 48115, 60231, 302984, 156135, 6199755, 2749570, 19551945, 8592454, 278457571, 926304432, 1885255291, 835602630

Basic calculations (n = 21131805)

Multiplication

n×y
n×2 42263610
n×3 63395415
n×4 84527220
n×5 105659025

Division

n÷y
n÷2 10565902.5
n÷3 7043935
n÷3 5282951.25
n÷5 4226361

Exponentiation

ny
n2 446553182558025
n3 9.4364747759456E+21
n4 1.994097448527E+29
n5 4.213887843327E+36

Nth Root

y√n
2√n 4596.9343045121
3√n 276.46842058411
4√n 67.800695457437
5√n 29.173418283196

Divisors of 21131805

1, 15, 1408787, 21131805

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21131804
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21131805 can be divided by 4 positive divisors. The sum of these divisors (counting 21131805) is 1, the average is 0.25.

Base conversion 21131805

Base System Value
2 Binary 1010000100111001000011101
3 Ternary 1110202121101110
4 Quaternary 1100213020131
5 Quinary 20402204210
6 Senary 2032532233
8 Octal 120471035
10 Decimal 21131805
12 Duodecimal 70b1079
16 Hexadecimal 142721d
20 Vigesimal 6c19a5
36 Base36 ckxel

Cryptographic Hash Functions

md5 49da44145bdbe591101b6d87a136898f
sha1 c9e7673e8d87e90c3c62df99101b1e533a1e8ad9
sha256 99295d762d656171f4aa4811e038e4c84519f623a96fcdd2a0b4a5a10d4a8f70
sha512 28e7a909ad9e0bc9d4fd85832dd07febd89cf86a8d07c2f61aa9d5f93f5389259d7a2295b142e6aae1ac68abf9fac2505724e61307854afe914c8f6510e80726
ripemd-160 5e31d9d14a603981beb23a03252e5b830f618e96

21131805 as geometric shapes

Circle

Radius = n
Diameter 42263610
Circumference 132775046.69018
Area 1.4028881977614E+15

Sphere

Radius = n
Volume 3.9527413109195E+22
Surface area 5.6115527910457E+15
Circumference 132775046.69018

Square

Length = n
Perimeter 84527220
Area 446553182558025
Diagonal 29884885.228424

Cube

Length = n
Surface area 2679319095348150
Volume 9.4364747759456E+21
Space diagonal 36601359.915638

Equilateral Triangle

Length = n
Perimeter 63395415
Area 1.9336320011802E+14
Altitude 18300679.957819

Triangular Pyramid

Length = n
Surface area 1.9336320011802E+14
Volume 1.1120992174278E+21
Height 9961628.4094745