161856225 is an odd 9-digits composite number following 161856224
and preceding 161856226. In scientific notation, it is written as 1.61856225 × 10^8.
The sum of its digits is 36. It has a total of 7 prime factors and 76 positive divisors.
There are 84486240 positive integers (up to 161856225) that are relatively prime to 161856225.
Prime Factorization
9 × 5 × 3 × 9 × 15 × 83 × 107
Composite number
| ω |
Distinct Factors |
6 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
17984025 |
Product of the distinct prime numbers |
The prime factorization of 161856225 is 9 × 5 × 3 × 9 × 15 × 83 × 107.
Since it has a total of 7 prime factors.
1, 3, 5, 9, 15, 27, 45, 75, 81, 83, 107, 135, 225, 243, 249, 321, 405, 415, 535, 675, 747, 963, 1215, 1245, 1605, 2025, 2241, 2889, 3645, 3735, 4815, 6075, 6225, 6723, 8025, 8667, 8881, 11205, 14445, 18225, 18675, 20169, 24075, 26001, 26643, 33615, 43335, 44405, 56025, 72225, 79929, 100845, 130005, 133215, 168075, 216675, 239787, 302535, 390015, 399645, 504225, 650025, 666075, 719361, 1198935, 1512675, 1950075, 1998225, 2158083, 3596805, 5994675, 10790415, 17984025, 32371245, 53952075, 161856225
76 divisors
| τ |
Total Divisors |
76 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-161856224 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.013157894736842 |
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 |
76 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 161856225 can be divided by 76 positive divisors.
The sum of these divisors (counting 161856225) is 1, the average is 0.013157894736842.