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
- 21491968 has 36 divisors, whose sum is 44078860
- The reverse of 21491968 is 86919412
- Previous prime number is 37
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 40
- Digital Root 4
Name
Name | twenty-one million four hundred ninety-one thousand nine hundred sixty-eight |
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Notation
Scientific notation | 2.1491968 × 10^7 |
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Engineering notation | 2.1491968 × 10^6 |
Prime Factorization of 21491968
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 37 × 2269
Composite numberω | 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×yn×2 | 42983936 |
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n×3 | 64475904 |
n×4 | 85967872 |
n×5 | 107459840 |
Division
n÷yn÷2 | 10745984 |
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n÷3 | 7163989.3333333 |
n÷3 | 5372992 |
n÷5 | 4298393.6 |
Exponentiation
nyn2 | 461904688513024 |
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n3 | 9.9272407845719E+21 |
n4 | 2.1335594127031E+29 |
n5 | 4.5854390623915E+36 |
Nth Root
y√n2√n | 4635.9430540075 |
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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 |
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sha1 | b1683b23d2985814a5ddab21dc6525bfc20cb2c2 |
sha256 | adb0a5c21a833d64be43fa06b0ed2bad65cde953221eaa92bfa32bdf6868108d |
sha512 | 65abab9f32cf76441f8066791da58daefc960a3bf3d98f9f33692338708815c5a8eb7340e443e8583d26b36dc241e6bb22a875e07834e2b3ff42f83d360d82a7 |
ripemd-160 | 2f5283d994837f6ce18221704f1c8a568dd416b2 |
21491968 as geometric shapes
Circle
Radius = nDiameter | 42983936 |
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Circumference | 135038017.55997 |
Area | 1.4511163760912E+15 |
Sphere
Radius = nVolume | 4.1583128958971E+22 |
---|---|
Surface area | 5.8044655043648E+15 |
Circumference | 135038017.55997 |
Square
Length = nPerimeter | 85967872 |
---|---|
Area | 461904688513024 |
Diagonal | 30394232.627689 |
Cube
Length = nSurface area | 2771428131078144 |
---|---|
Volume | 9.9272407845719E+21 |
Space diagonal | 37225180.530644 |
Equilateral Triangle
Length = nPerimeter | 64475904 |
---|---|
Area | 2.0001059718971E+14 |
Altitude | 18612590.265322 |
Triangular Pyramid
Length = nSurface area | 2.0001059718971E+14 |
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Volume | 1.1699365462071E+21 |
Height | 10131410.875896 |