21493728 (number)
21493728 is an even 8-digits composite number following 21493727 and preceding 21493729. In scientific notation, it is written as 2.1493728 × 10^7. The sum of its digits is 36. It has a total of 8 prime factors and 48 positive divisors. There are 7164288 positive integers (up to 21493728) that are relatively prime to 21493728.
Interesting facts
- 21493728 has 48 divisors, whose sum is 62692560
- The reverse of 21493728 is 82739412
- Previous prime number is 9
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | twenty-one million four hundred ninety-three thousand seven hundred twenty-eight |
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Notation
Scientific notation | 2.1493728 × 10^7 |
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Engineering notation | 2.1493728 × 10^6 |
Prime Factorization of 21493728
Prime Factorization 2 × 2 × 2 × 2 × 2 × 3 × 9 × 24877
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 8 | Total number of prime factors |
rad | Radical | 1343358 | Product of the distinct prime numbers |
The prime factorization of 21493728 is 2 × 2 × 2 × 2 × 2 × 3 × 9 × 24877. Since it has a total of 8 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21493728)
Multiplication
n×yn×2 | 42987456 |
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n×3 | 64481184 |
n×4 | 85974912 |
n×5 | 107468640 |
Division
n÷yn÷2 | 10746864 |
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n÷3 | 7164576 |
n÷3 | 5373432 |
n÷5 | 4298745.6 |
Exponentiation
nyn2 | 461980343337984 |
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n3 | 9.9296798410532E+21 |
n4 | 2.1342583763068E+29 |
n5 | 4.587316902206E+36 |
Nth Root
y√n2√n | 4636.1328712624 |
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3√n | 278.03784658038 |
4√n | 68.089153844518 |
5√n | 29.27267086938 |
Divisors of 21493728
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21493727 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | 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 | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21493728 can be divided by 48 positive divisors. The sum of these divisors (counting 21493728) is 1, the average is 0.020833333333333.
Base conversion 21493728
Base | System | Value |
---|---|---|
2 | Binary | 1010001111111011111100000 |
3 | Ternary | 1111102222212000 |
4 | Quaternary | 1101333133200 |
5 | Quinary | 21000244403 |
6 | Senary | 2044404000 |
8 | Octal | 121773740 |
10 | Decimal | 21493728 |
12 | Duodecimal | 7246600 |
16 | Hexadecimal | 147f7e0 |
20 | Vigesimal | 6e6e68 |
36 | Base36 | csoo0 |
Cryptographic Hash Functions
md5 | 4565fd7c5a01a29fbbe0cd7f55b5bf07 |
---|---|
sha1 | 0175aeeca94976af300169d5af92ab6526bb2476 |
sha256 | e65f36bf303d2fa30e963235dd2bc6e761d7e01bf25422f8cfb4f3fd5789be4a |
sha512 | 76c92c5f3545b3a3ee899c0f86641d58f6165ae9e22a6d88a9928c83c2a3103acdb92081e51a23142bbd078202ea4b826f42912f6f04c56b1da255df46d11ca0 |
ripemd-160 | a5cca1d6f6d8931614ef76eda9141f151e5ff0f1 |
21493728 as geometric shapes
Circle
Radius = nDiameter | 42987456 |
---|---|
Circumference | 135049075.96611 |
Area | 1.4513540527335E+15 |
Sphere
Radius = nVolume | 4.1593345654869E+22 |
---|---|
Surface area | 5.805416210934E+15 |
Circumference | 135049075.96611 |
Square
Length = nPerimeter | 85974912 |
---|---|
Area | 461980343337984 |
Diagonal | 30396721.643558 |
Cube
Length = nSurface area | 2771882060027904 |
---|---|
Volume | 9.9296798410532E+21 |
Space diagonal | 37228228.940066 |
Equilateral Triangle
Length = nPerimeter | 64481184 |
---|---|
Area | 2.0004335668988E+14 |
Altitude | 18614114.470033 |
Triangular Pyramid
Length = nSurface area | 2.0004335668988E+14 |
---|---|
Volume | 1.17022399177E+21 |
Height | 10132240.547853 |