21491968 (number)

21491968 is an even 8-digits composite number following 21491967 and preceding 21491969. In scientific notation, it is written as 2.1491968 × 10^7. The sum of its digits is 40. It has a total of 10 prime factors and 36 positive divisors. There are 10450944 positive integers (up to 21491968) that are relatively prime to 21491968.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand nine hundred sixty-eight

Notation

Scientific notation 2.1491968 × 10^7
Engineering notation 2.1491968 × 10^6

Prime Factorization of 21491968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 37 × 2269

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 167906
Product of the distinct prime numbers

The prime factorization of 21491968 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 37 × 2269. Since it has a total of 10 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491968)

Multiplication

n×y
n×2 42983936
n×3 64475904
n×4 85967872
n×5 107459840

Division

n÷y
n÷2 10745984
n÷3 7163989.3333333
n÷3 5372992
n÷5 4298393.6

Exponentiation

ny
n2 461904688513024
n3 9.9272407845719E+21
n4 2.1335594127031E+29
n5 4.5854390623915E+36

Nth Root

y√n
2√n 4635.9430540075
3√n 278.03025739022
4√n 68.087759942647
5√n 29.272191458937

Divisors of 21491968

36 divisors

τ Total Divisors 36
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.027777777777778
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 36
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491968 can be divided by 36 positive divisors. The sum of these divisors (counting 21491968) is 1, the average is 0.027777777777778.

Base conversion 21491968

Base System Value
2 Binary 1010001111111000100000000
3 Ternary 1111102220102211
4 Quaternary 1101333010000
5 Quinary 21000220333
6 Senary 2044351504
8 Octal 121770400
10 Decimal 21491968
12 Duodecimal 7245594
16 Hexadecimal 147f100
20 Vigesimal 6e69i8
36 Base36 csnb4

Cryptographic Hash Functions

md5 29d8b12a71ca2d26251abc370726205e
sha1 b1683b23d2985814a5ddab21dc6525bfc20cb2c2
sha256 adb0a5c21a833d64be43fa06b0ed2bad65cde953221eaa92bfa32bdf6868108d
sha512 65abab9f32cf76441f8066791da58daefc960a3bf3d98f9f33692338708815c5a8eb7340e443e8583d26b36dc241e6bb22a875e07834e2b3ff42f83d360d82a7
ripemd-160 2f5283d994837f6ce18221704f1c8a568dd416b2

21491968 as geometric shapes

Circle

Radius = n
Diameter 42983936
Circumference 135038017.55997
Area 1.4511163760912E+15

Sphere

Radius = n
Volume 4.1583128958971E+22
Surface area 5.8044655043648E+15
Circumference 135038017.55997

Square

Length = n
Perimeter 85967872
Area 461904688513024
Diagonal 30394232.627689

Cube

Length = n
Surface area 2771428131078144
Volume 9.9272407845719E+21
Space diagonal 37225180.530644

Equilateral Triangle

Length = n
Perimeter 64475904
Area 2.0001059718971E+14
Altitude 18612590.265322

Triangular Pyramid

Length = n
Surface area 2.0001059718971E+14
Volume 1.1699365462071E+21
Height 10131410.875896