1291508748 is an even 10-digits composite number following 1291508747
and preceding 1291508749. In scientific notation, it is written as 1.291508748 × 10^9.
The sum of its digits is 45. It has a total of 7 prime factors and 72 positive divisors.
There are 423012096 positive integers (up to 1291508748) that are relatively prime to 1291508748.
Prime Factorization
2 × 2 × 3 × 3 × 79 × 233 × 1949
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
215251458 |
Product of the distinct prime numbers |
The prime factorization of 1291508748 is 2 × 2 × 3 × 3 × 79 × 233 × 1949.
Since it has a total of 7 prime factors.
1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 233, 237, 316, 466, 474, 699, 711, 932, 948, 1398, 1422, 1949, 2097, 2796, 2844, 3898, 4194, 5847, 7796, 8388, 11694, 17541, 18407, 23388, 35082, 36814, 55221, 70164, 73628, 110442, 153971, 165663, 220884, 307942, 331326, 454117, 461913, 615884, 662652, 908234, 923826, 1362351, 1385739, 1816468, 1847652, 2724702, 2771478, 4087053, 5449404, 5542956, 8174106, 16348212, 35875243, 71750486, 107625729, 143500972, 215251458, 322877187, 430502916, 645754374, 1291508748
72 divisors
| τ |
Total Divisors |
72 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-1291508747 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.013888888888889 |
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 |
72 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 1291508748 can be divided by 72 positive divisors.
The sum of these divisors (counting 1291508748) is 1, the average is 0.013888888888889.