21812 (number)

21812 is an even 5-digits composite number following 21811 and preceding 21813. In scientific notation, it is written as 2.1812 × 10^4. The sum of its digits is 14. It has a total of 5 prime factors and 24 positive divisors. There are 8640 positive integers (up to 21812) that are relatively prime to 21812.

Interesting facts

Basic properties

Name

Name twenty-one thousand eight hundred twelve

Notation

Scientific notation 2.1812 × 10^4
Engineering notation 2.1812 × 10^3

Prime Factorization of 21812

Prime Factorization 2 × 2 × 7 × 41 × 19

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10906
Product of the distinct prime numbers

The prime factorization of 21812 is 2 × 2 × 7 × 41 × 19. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 6, 46, 7, 617, 582, 229, 4481, 47761, 67455, 909967, 106691, 7149953, 532856, 97821996, 93637363, 594910009, 964328552, 408114070, 9299508749

Basic calculations (n = 21812)

Multiplication

n×y
n×2 43624
n×3 65436
n×4 87248
n×5 109060

Division

n÷y
n÷2 10906
n÷3 7270.6666666667
n÷3 5453
n÷5 4362.4

Exponentiation

ny
n2 475763344
n3 10377350059328
n4 226350759494062336
n5 4.9371627660845E+21

Nth Root

y√n
2√n 147.6888621393
3√n 27.940349201513
4√n 12.152730645386
5√n 7.3746106765284

Divisors of 21812

1, 2, 4, 7, 14, 19, 28, 38, 41, 76, 82, 133, 164, 266, 287, 532, 574, 779, 1148, 1558, 3116, 5453, 10906, 21812

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21811
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21812 can be divided by 24 positive divisors. The sum of these divisors (counting 21812) is 1, the average is 0.041666666666667.

Base conversion 21812

Base System Value
2 Binary 101010100110100
3 Ternary 1002220212
4 Quaternary 11110310
5 Quinary 1144222
6 Senary 244552
8 Octal 52464
10 Decimal 21812
12 Duodecimal 10758
16 Hexadecimal 5534
20 Vigesimal 2eac
36 Base36 gtw

Cryptographic Hash Functions

md5 82aafca3e03771835c2e1acb19fde2d4
sha1 10401b9d14133b4eccd26c8fc830d82ffde60957
sha256 3ec5b905ff5e0bd9c15c650cd156c21bf0b1d3a84b685eb684eccfea74f8f2b7
sha512 89a2afeae2b442857e855b6499f8c72ae6d455c2733d18fd1decad228e1cb05a9449f7f0fadf3d449281b89bbd7c26c8d41c2cad58fdb6b28ec10c7d85cb2f03
ripemd-160 f12092a2940972851ece261e9b4361c43a06ea09

21812 as geometric shapes

Circle

Radius = n
Diameter 43624
Circumference 137048.8379202
Area 1494654626.3577

Sphere

Radius = n
Volume 43468542280153
Surface area 5978618505.4309
Circumference 137048.8379202

Square

Length = n
Perimeter 87248
Area 475763344
Diagonal 30846.826222482

Cube

Length = n
Surface area 2854580064
Volume 10377350059328
Space diagonal 37779.492214692

Equilateral Triangle

Length = n
Perimeter 65436
Area 206011571.04672
Altitude 18889.746107346

Triangular Pyramid

Length = n
Surface area 206011571.04672
Volume 1222982432949.6
Height 10282.275407494