21491812 (number)

21491812 is an even 8-digits composite number following 21491811 and preceding 21491813. In scientific notation, it is written as 2.1491812 × 10^7. The sum of its digits is 28. It has a total of 5 prime factors and 24 positive divisors. There are 10005696 positive integers (up to 21491812) that are relatively prime to 21491812.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred twelve

Notation

Scientific notation 2.1491812 × 10^7
Engineering notation 2.1491812 × 10^6

Prime Factorization of 21491812

Prime Factorization 2 × 2 × 19 × 59 × 4793

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10745906
Product of the distinct prime numbers

The prime factorization of 21491812 is 2 × 2 × 19 × 59 × 4793. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 10, 82, 100, 846, 253, 7755, 9324, 40027, 58632, 461835, 164532, 8616975, 3701743, 57705765, 32422883, 521165753, 442915498, 8491855301, 8412697215

Basic calculations (n = 21491812)

Multiplication

n×y
n×2 42983624
n×3 64475436
n×4 85967248
n×5 107459060

Division

n÷y
n÷2 10745906
n÷3 7163937.3333333
n÷3 5372953
n÷5 4298362.4

Exponentiation

ny
n2 461897983043344
n3 9.9270246147467E+21
n4 2.1334974673951E+29
n5 4.5852726471731E+36

Nth Root

y√n
2√n 4635.9262289213
3√n 278.02958469201
4√n 68.087636388123
5√n 29.272148964224

Divisors of 21491812

1, 2, 4, 19, 38, 59, 76, 118, 236, 1121, 2242, 4484, 4793, 9586, 19172, 91067, 182134, 282787, 364268, 565574, 1131148, 5372953, 10745906, 21491812

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 -21491811
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 21491812 can be divided by 24 positive divisors. The sum of these divisors (counting 21491812) is 1, the average is 0.041666666666667.

Base conversion 21491812

Base System Value
2 Binary 1010001111111000001100100
3 Ternary 1111102220020001
4 Quaternary 1101333001210
5 Quinary 21000214222
6 Senary 2044351044
8 Octal 121770144
10 Decimal 21491812
12 Duodecimal 7245484
16 Hexadecimal 147f064
20 Vigesimal 6e69ac
36 Base36 csn6s

Cryptographic Hash Functions

md5 c07779ecbc9e5440a5bb19ce6f29fe45
sha1 cc22aec32681697c3e88a3d4ddd984037abb281c
sha256 e70c6e86747d2cb3807270b030958c46060ce0548867f6113b0c42ee237ba848
sha512 1f19ced939643be9574a62eae3d3e3e644ebfda5a2b51edbee5d7a4aac970269938203087a6749906bc71cbdde14460c6e2e2ccab9763d5baca1c64ec0e001a1
ripemd-160 eb9367588aef0325617b8c8ca2d9ea9418c90daa

21491812 as geometric shapes

Circle

Radius = n
Diameter 42983624
Circumference 135037037.38307
Area 1.4510953102369E+15

Sphere

Radius = n
Volume 4.1582223468925E+22
Surface area 5.8043812409476E+15
Circumference 135037037.38307

Square

Length = n
Perimeter 85967248
Area 461897983043344
Diagonal 30394012.010373

Cube

Length = n
Surface area 2771387898260064
Volume 9.9270246147467E+21
Space diagonal 37224910.330718

Equilateral Triangle

Length = n
Perimeter 64475436
Area 2.0000769363616E+14
Altitude 18612455.165359

Triangular Pyramid

Length = n
Surface area 2.0000769363616E+14
Volume 1.1699110703489E+21
Height 10131337.336791