18381978 (number)
18381978 is an even 8-digits composite number following 18381977 and preceding 18381979. In scientific notation, it is written as 1.8381978 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 48 positive divisors. There are 6053616 positive integers (up to 18381978) that are relatively prime to 18381978.
Interesting facts
- 18381978 has 48 divisors, whose sum is 41801760
- The reverse of 18381978 is 87918381
- Previous prime number is 109
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 45
- Digital Root 9
Name
Name | eighteen million three hundred eighty-one thousand nine hundred seventy-eight |
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Notation
Scientific notation | 1.8381978 × 10^7 |
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Engineering notation | 1.8381978 × 10^6 |
Prime Factorization of 18381978
Prime Factorization 2 × 9 × 3 × 9 × 109 × 347
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 2042442 | Product of the distinct prime numbers |
The prime factorization of 18381978 is 2 × 9 × 3 × 9 × 109 × 347. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 18381978)
Multiplication
n×yn×2 | 36763956 |
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n×3 | 55145934 |
n×4 | 73527912 |
n×5 | 91909890 |
Division
n÷yn÷2 | 9190989 |
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n÷3 | 6127326 |
n÷3 | 4595494.5 |
n÷5 | 3676395.6 |
Exponentiation
nyn2 | 337897115192484 |
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n3 | 6.2112173377317E+21 |
n4 | 1.141744604554E+29 |
n5 | 2.0987524202531E+36 |
Nth Root
y√n2√n | 4287.4209030605 |
---|---|
3√n | 263.91500362959 |
4√n | 65.478400278722 |
5√n | 28.371248545626 |
Divisors of 18381978
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 | -18381977 | 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 18381978 can be divided by 48 positive divisors. The sum of these divisors (counting 18381978) is 1, the average is 0.020833333333333.
Base conversion 18381978
Base | System | Value |
---|---|---|
2 | Binary | 1000110000111110010011010 |
3 | Ternary | 1021120220100000 |
4 | Quaternary | 1012013302122 |
5 | Quinary | 14201210403 |
6 | Senary | 1453553430 |
8 | Octal | 106076232 |
10 | Decimal | 18381978 |
12 | Duodecimal | 61a5876 |
16 | Hexadecimal | 1187c9a |
20 | Vigesimal | 5eheii |
36 | Base36 | axzmi |
Cryptographic Hash Functions
md5 | 045290cfb4a64a1d8853ebca00e4467d |
---|---|
sha1 | f3742f895cff6d8b83be78c768d359762d69d5eb |
sha256 | bc4dc3754a39cd56bbe415ad1ae12ebe99bbb4630c08eee1e8fc137957e0ccd9 |
sha512 | 5f3e3fcfb6c2005258f7320c7d9942f054365d4277b2096f88d0421133183f8cc253c72ae9802f8c878bfaa7aba0d3c51fa6183cc42635be286ff47f53048d5a |
ripemd-160 | fbf004834601dd1af1651d71aa9b4316864a7b59 |
18381978 as geometric shapes
Circle
Radius = nDiameter | 36763956 |
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Circumference | 115497374.0865 |
Area | 1.0615350947579E+15 |
Sphere
Radius = nVolume | 2.601748634409E+22 |
---|---|
Surface area | 4.2461403790316E+15 |
Circumference | 115497374.0865 |
Square
Length = nPerimeter | 73527912 |
---|---|
Area | 337897115192484 |
Diagonal | 25996042.590844 |
Cube
Length = nSurface area | 2027382691154904 |
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Volume | 6.2112173377317E+21 |
Space diagonal | 31838519.839613 |
Equilateral Triangle
Length = nPerimeter | 55145934 |
---|---|
Area | 1.4631374281108E+14 |
Altitude | 15919259.919807 |
Triangular Pyramid
Length = nSurface area | 1.4631374281108E+14 |
---|---|
Volume | 7.3199898315559E+20 |
Height | 8665347.5302813 |