21491386 (number)

21491386 is an even 8-digits composite number following 21491385 and preceding 21491387. In scientific notation, it is written as 2.1491386 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors. There are 9118800 positive integers (up to 21491386) that are relatively prime to 21491386.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand three hundred eighty-six

Notation

Scientific notation 2.1491386 × 10^7
Engineering notation 2.1491386 × 10^6

Prime Factorization of 21491386

Prime Factorization 2 × 7 × 101 × 15199

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491386
Product of the distinct prime numbers

The prime factorization of 21491386 is 2 × 7 × 101 × 15199. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 4, 77, 19, 869, 117, 1164, 9061, 89626, 28979, 693083, 254114, 389853, 8785324, 27599895, 37223317, 653507196, 852448291, 2855084310, 4398951196

Basic calculations (n = 21491386)

Multiplication

n×y
n×2 42982772
n×3 64474158
n×4 85965544
n×5 107456930

Division

n÷y
n÷2 10745693
n÷3 7163795.3333333
n÷3 5372846.5
n÷5 4298277.2

Exponentiation

ny
n2 461879672200996
n3 9.9264343208251E+21
n4 2.133328315925E+29
n5 4.5848182302274E+36

Nth Root

y√n
2√n 4635.8802831825
3√n 278.02774769186
4√n 68.087298985806
5√n 29.27203291971

Divisors of 21491386

1, 2, 7, 14, 101, 202, 707, 1414, 15199, 30398, 106393, 212786, 1535099, 3070198, 10745693, 21491386

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491385
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491386 can be divided by 16 positive divisors. The sum of these divisors (counting 21491386) is 1, the average is 0.0625.

Base conversion 21491386

Base System Value
2 Binary 1010001111110111010111010
3 Ternary 1111102212122021
4 Quaternary 1101332322322
5 Quinary 21000211021
6 Senary 2044345054
8 Octal 121767272
10 Decimal 21491386
12 Duodecimal 724518a
16 Hexadecimal 147eeba
20 Vigesimal 6e6896
36 Base36 csmuy

Cryptographic Hash Functions

md5 4b8997fbdb0f558b1ecf8234f433e78f
sha1 3fe5c233ba3920d1046be6f89ff8d60327847897
sha256 52ad589ae9c10cea2f96010ddf8c1f46d5f2c9335d3a2e5b9e4846761a665919
sha512 8265f8947b65bbae41ecbecdd04135d0212bdb4dd18be543e17b9a5048a5ca21a1be792302af2d1dfe9b83da92b2a6d5467055b089d8e42021fd85122bd0c051
ripemd-160 8327e6c1b00076ac5bc9a1692dbb75b7664f3c81

21491386 as geometric shapes

Circle

Radius = n
Diameter 42982772
Circumference 135034360.74613
Area 1.4510377850291E+15

Sphere

Radius = n
Volume 4.1579750851528E+22
Surface area 5.8041511401164E+15
Circumference 135034360.74613

Square

Length = n
Perimeter 85965544
Area 461879672200996
Diagonal 30393409.555395

Cube

Length = n
Surface area 2771278033205976
Volume 9.9264343208251E+21
Space diagonal 37224172.477074

Equilateral Triangle

Length = n
Perimeter 64474158
Area 1.9999976480885E+14
Altitude 18612086.238537

Triangular Pyramid

Length = n
Surface area 1.9999976480885E+14
Volume 1.169841503543E+21
Height 10131136.518465