161609987 (number)
161609987 is an odd 9-digits composite number following 161609986 and preceding 161609988. In scientific notation, it is written as 1.61609987 × 10^8. The sum of its digits is 47. It has a total of 6 prime factors and 48 positive divisors. There are 119952000 positive integers (up to 161609987) that are relatively prime to 161609987.
Interesting facts
- 161609987 has 48 divisors, whose sum is 215115264
- The reverse of 161609987 is 789906161
- Previous prime number is 103
Basic properties
- Is Prime? no
- Number parity odd
- Number length 9
- Sum of Digits 47
- Digital Root 2
Name
Name | one hundred sixty-one million six hundred nine thousand nine hundred eighty-seven |
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Notation
Scientific notation | 1.61609987 × 10^8 |
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Engineering notation | 1.61609987 × 10^6 |
Prime Factorization of 161609987
Prime Factorization 7 × 7 × 11 × 41 × 103 × 71
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 23087141 | Product of the distinct prime numbers |
The prime factorization of 161609987 is 7 × 7 × 11 × 41 × 103 × 71. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 161609987)
Multiplication
n×yn×2 | 323219974 |
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n×3 | 484829961 |
n×4 | 646439948 |
n×5 | 808049935 |
Division
n÷yn÷2 | 80804993.5 |
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n÷3 | 53869995.666667 |
n÷3 | 40402496.75 |
n÷5 | 32321997.4 |
Exponentiation
nyn2 | 26117787898140169 |
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n3 | 4.2208953626872E+24 |
n4 | 6.8213884469224E+32 |
n5 | 1.1024044982291E+41 |
Nth Root
y√n2√n | 12712.591671253 |
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3√n | 544.69835677247 |
4√n | 112.75012936246 |
5√n | 43.8221457606 |
Divisors of 161609987
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 | -161609986 | 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 161609987 can be divided by 48 positive divisors. The sum of these divisors (counting 161609987) is 1, the average is 0.020833333333333.
Base conversion 161609987
Base | System | Value |
---|---|---|
2 | Binary | 1001101000011111100100000011 |
3 | Ternary | 102021002122020002 |
4 | Quaternary | 21220133210003 |
5 | Quinary | 312333004422 |
6 | Senary | 24011510215 |
8 | Octal | 1150374403 |
10 | Decimal | 161609987 |
12 | Duodecimal | 4615836b |
16 | Hexadecimal | 9a1f903 |
20 | Vigesimal | 2aa14j7 |
36 | Base36 | 2o7v2b |
Cryptographic Hash Functions
md5 | f92685e69224da75c6bdee3ac4806d0f |
---|---|
sha1 | 2d45e0ff1dcfe36f786eba4894057aafeae95953 |
sha256 | 4bb35a2df69fcaeabec0600e09538b7c3370e7df0b67b30257f17a30c2e6c226 |
sha512 | 343a20089940dec9b13af9ca8745d72d964664340a59d66ee67ca82030614f4e29a18b438878f49fb2aced01b3fa2a3f89485aa0d6723402562e2c693238ef22 |
ripemd-160 | beb672893a6278ede99fbaad58d1d676c1eb162e |
161609987 as geometric shapes
Circle
Radius = nDiameter | 323219974 |
---|---|
Circumference | 1015425495.8119 |
Area | 8.2051450588814E+16 |
Sphere
Radius = nVolume | 1.7680445150652E+25 |
---|---|
Surface area | 3.2820580235525E+17 |
Circumference | 1015425495.8119 |
Square
Length = nPerimeter | 646439948 |
---|---|
Area | 26117787898140169 |
Diagonal | 228551035.43034 |
Cube
Length = nSurface area | 156706727388841014 |
---|---|
Volume | 4.2208953626872E+24 |
Space diagonal | 279916708.49455 |
Equilateral Triangle
Length = nPerimeter | 484829961 |
---|---|
Area | 1.1309333905222E+16 |
Altitude | 139958354.24727 |
Triangular Pyramid
Length = nSurface area | 1.1309333905222E+16 |
---|---|
Volume | 4.9743728893916E+23 |
Height | 76183678.47678 |