18887988 (number)
18887988 is an even 8-digits composite number following 18887987 and preceding 18887989. In scientific notation, it is written as 1.8887988 × 10^7. The sum of its digits is 57. It has a total of 6 prime factors and 48 positive divisors. There are 5318880 positive integers (up to 18887988) that are relatively prime to 18887988.
Interesting facts
- 18887988 has 48 divisors, whose sum is 51093504
- The reverse of 18887988 is 88978881
- Previous prime number is 71
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 57
- Digital Root 3
Name
Name | eighteen million eight hundred eighty-seven thousand nine hundred eighty-eight |
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Notation
Scientific notation | 1.8887988 × 10^7 |
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Engineering notation | 1.8887988 × 10^6 |
Prime Factorization of 18887988
Prime Factorization 2 × 2 × 3 × 7 × 71 × 3167
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 9443994 | Product of the distinct prime numbers |
The prime factorization of 18887988 is 2 × 2 × 3 × 7 × 71 × 3167. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 18887988)
Multiplication
n×yn×2 | 37775976 |
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n×3 | 56663964 |
n×4 | 75551952 |
n×5 | 94439940 |
Division
n÷yn÷2 | 9443994 |
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n÷3 | 6295996 |
n÷3 | 4721997 |
n÷5 | 3777597.6 |
Exponentiation
nyn2 | 356756090688144 |
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n3 | 6.7384047598446E+21 |
n4 | 1.2727490824309E+29 |
n5 | 2.4039669395965E+36 |
Nth Root
y√n2√n | 4346.0312930305 |
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3√n | 266.31475733139 |
4√n | 65.92443623597 |
5√n | 28.525754460186 |
Divisors of 18887988
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 | -18887987 | 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 18887988 can be divided by 48 positive divisors. The sum of these divisors (counting 18887988) is 1, the average is 0.020833333333333.
Base conversion 18887988
Base | System | Value |
---|---|---|
2 | Binary | 1001000000011010100110100 |
3 | Ternary | 1022112121110010 |
4 | Quaternary | 1020003110310 |
5 | Quinary | 14313403423 |
6 | Senary | 1512500220 |
8 | Octal | 110032464 |
10 | Decimal | 18887988 |
12 | Duodecimal | 63aa670 |
16 | Hexadecimal | 1203534 |
20 | Vigesimal | 5i0jj8 |
36 | Base36 | b8u2c |
Cryptographic Hash Functions
md5 | 86a0a40032548b6476c7a8b7dad42279 |
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sha1 | c0cd9dab38ae31904c919fb6bfdc258964f2b2c1 |
sha256 | 193fd6d5b824a7a68b4d9a9dff17d61d32a7b2e94d73217e0791d692f4977372 |
sha512 | 4e541718b5e5eba3dc80023ec2d7d96f3bd08390084005bfea4b7b2da97d23153d48d843b7449b7c996e61bb01f057b6b8af806c2e70fbeb66d8a54a9b2dc80a |
ripemd-160 | 33c53a751e9414e1d9cfc7ce7dce86e61d1bf6fa |
18887988 as geometric shapes
Circle
Radius = nDiameter | 37775976 |
---|---|
Circumference | 118676728.68378 |
Area | 1.1207823136293E+15 |
Sphere
Radius = nVolume | 2.8225763853923E+22 |
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Surface area | 4.4831292545171E+15 |
Circumference | 118676728.68378 |
Square
Length = nPerimeter | 75551952 |
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Area | 356756090688144 |
Diagonal | 26711648.79554 |
Cube
Length = nSurface area | 2140536544128864 |
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Volume | 6.7384047598446E+21 |
Space diagonal | 32714954.868751 |
Equilateral Triangle
Length = nPerimeter | 56663964 |
---|---|
Area | 1.5447991874538E+14 |
Altitude | 16357477.434376 |
Triangular Pyramid
Length = nSurface area | 1.5447991874538E+14 |
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Volume | 7.9412861667763E+20 |
Height | 8903882.9318468 |