21491875 (number)

21491875 is an odd 8-digits composite number following 21491874 and preceding 21491876. In scientific notation, it is written as 2.1491875 × 10^7. The sum of its digits is 37. It has a total of 6 prime factors and 20 positive divisors. There are 17000000 positive integers (up to 21491875) that are relatively prime to 21491875.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred seventy-five

Notation

Scientific notation 2.1491875 × 10^7
Engineering notation 2.1491875 × 10^6

Prime Factorization of 21491875

Prime Factorization 5 × 5 × 5 × 5 × 137 × 251

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 171935
Product of the distinct prime numbers

The prime factorization of 21491875 is 5 × 5 × 5 × 5 × 137 × 251. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 9, 87, 57, 744, 457, 8409, 6284, 31032, 52115, 177684, 226849, 5037154, 9654251, 7987887, 90667043, 437993662, 5160283, 2208697044, 2604790049

Basic calculations (n = 21491875)

Multiplication

n×y
n×2 42983750
n×3 64475625
n×4 85967500
n×5 107459375

Division

n÷y
n÷2 10745937.5
n÷3 7163958.3333333
n÷3 5372968.75
n÷5 4298375

Exponentiation

ny
n2 461900691015625
n3 9.9271119137214E+21
n4 2.1335224836071E+29
n5 4.5853398527374E+36

Nth Root

y√n
2√n 4635.933023675
3√n 278.02985635899
4√n 68.087686285223
5√n 29.27216612558

Divisors of 21491875

1, 5, 25, 125, 137, 251, 625, 685, 1255, 3425, 6275, 17125, 31375, 34387, 85625, 156875, 171935, 859675, 4298375, 21491875

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 -21491874
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 21491875 can be divided by 20 positive divisors. The sum of these divisors (counting 21491875) is 1, the average is 0.05.

Base conversion 21491875

Base System Value
2 Binary 1010001111111000010100011
3 Ternary 1111102220022101
4 Quaternary 1101333002203
5 Quinary 21000220000
6 Senary 2044351231
8 Octal 121770243
10 Decimal 21491875
12 Duodecimal 7245517
16 Hexadecimal 147f0a3
20 Vigesimal 6e69df
36 Base36 csn8j

Cryptographic Hash Functions

md5 c6e9bb48a8dc96f2b253b42dbf2d789a
sha1 b2395d27cc6533680597e0b3f9222459fa2a0418
sha256 822aa9e278cb328400a3d66469d987b6b215129b32c459825c52d965cd75210c
sha512 475e74c200d1ffb207b275017fac1d048d9cf5128c0af62c1e53931fa42cd2afbd5d35e078d8f0656851ce86b03978bce33c4002c97dabfcbba1d8d5dccff05b
ripemd-160 44eb8fac96fd7ddafadbbdbef49d19417c4ce019

21491875 as geometric shapes

Circle

Radius = n
Diameter 42983750
Circumference 135037433.22374
Area 1.4511038175827E+15

Sphere

Radius = n
Volume 4.1582589146015E+22
Surface area 5.8044152703309E+15
Circumference 135037433.22374

Square

Length = n
Perimeter 85967500
Area 461900691015625
Diagonal 30394101.105827

Cube

Length = n
Surface area 2771404146093750
Volume 9.9271119137214E+21
Space diagonal 37225019.449919

Equilateral Triangle

Length = n
Perimeter 64475625
Area 2.0000886622256E+14
Altitude 18612509.72496

Triangular Pyramid

Length = n
Surface area 2.0000886622256E+14
Volume 1.1699213586317E+21
Height 10131367.035276