21491638 (number)

21491638 is an even 8-digits composite number following 21491637 and preceding 21491639. In scientific notation, it is written as 2.1491638 × 10^7. The sum of its digits is 34. It has a total of 5 prime factors and 32 positive divisors. There are 8543232 positive integers (up to 21491638) that are relatively prime to 21491638.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand six hundred thirty-eight

Notation

Scientific notation 2.1491638 × 10^7
Engineering notation 2.1491638 × 10^6

Prime Factorization of 21491638

Prime Factorization 2 × 17 × 7 × 73 × 1237

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21491638
Product of the distinct prime numbers

The prime factorization of 21491638 is 2 × 17 × 7 × 73 × 1237. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 8, 26, 36, 755, 559, 6963, 6930, 49733, 29946, 754685, 872965, 7032908, 5303734, 66204446, 97985102, 966300547, 171312842, 6534138554, 943435095

Basic calculations (n = 21491638)

Multiplication

n×y
n×2 42983276
n×3 64474914
n×4 85966552
n×5 107458190

Division

n÷y
n÷2 10745819
n÷3 7163879.3333333
n÷3 5372909.5
n÷5 4298327.6

Exponentiation

ny
n2 461890503923044
n3 9.9267835059516E+21
n4 2.1334283761428E+29
n5 4.585087035899E+36

Nth Root

y√n
2√n 4635.9074624069
3√n 278.02883437094
4√n 68.087498576515
5√n 29.272101565983

Divisors of 21491638

1, 2, 7, 14, 17, 34, 73, 119, 146, 238, 511, 1022, 1237, 1241, 2474, 2482, 8659, 8687, 17318, 17374, 21029, 42058, 90301, 147203, 180602, 294406, 632107, 1264214, 1535117, 3070234, 10745819, 21491638

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491637
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491638 can be divided by 32 positive divisors. The sum of these divisors (counting 21491638) is 1, the average is 0.03125.

Base conversion 21491638

Base System Value
2 Binary 1010001111110111110110110
3 Ternary 1111102212222121
4 Quaternary 1101332332312
5 Quinary 21000213023
6 Senary 2044350154
8 Octal 121767666
10 Decimal 21491638
12 Duodecimal 724535a
16 Hexadecimal 147efb6
20 Vigesimal 6e691i
36 Base36 csn1y

Cryptographic Hash Functions

md5 4cda918050d31dc64ba49eeab05b3d34
sha1 fa9e27ef4c0b0def945acf2eddddc557d097aa48
sha256 85b505adf4170fb71c3158ca0d5c3264db58750002269e11e2f70650994fb0ad
sha512 ca26e02d68f7f120570f561c1265cc0f6a4e56d0bea56c80dfc963a2556eccd0488b322baa9460db99d3c1031f7ae1f8dbfcce0c9c2d243952cf535cc4b6e917
ripemd-160 3e27a5df879a254ad8085cfa3c0185d37d26fb57

21491638 as geometric shapes

Circle

Radius = n
Diameter 42983276
Circumference 135035944.10882
Area 1.4510718138875E+15

Sphere

Radius = n
Volume 4.1581213514765E+22
Surface area 5.8042872555501E+15
Circumference 135035944.10882

Square

Length = n
Perimeter 85966552
Area 461890503923044
Diagonal 30393765.937213

Cube

Length = n
Surface area 2771343023538264
Volume 9.9267835059516E+21
Space diagonal 37224608.953878

Equilateral Triangle

Length = n
Perimeter 64474914
Area 2.0000445508208E+14
Altitude 18612304.476939

Triangular Pyramid

Length = n
Surface area 2.0000445508208E+14
Volume 1.1698826554049E+21
Height 10131255.312404