991661568 is an even 9-digits composite number following 991661567
and preceding 991661569. In scientific notation, it is written as 9.91661568 × 10^8.
The sum of its digits is 51. It has a total of 12 prime factors and 80 positive divisors.
There are 321601536 positive integers (up to 991661568) that are relatively prime to 991661568.
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 37 × 17449
Composite number
| ω |
Distinct Factors |
4 |
Total number of distinct prime factors |
| Ω |
Total Factors |
12 |
Total number of prime factors |
| rad |
Radical |
3873678 |
Product of the distinct prime numbers |
The prime factorization of 991661568 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 37 × 17449.
Since it has a total of 12 prime factors.
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 37, 48, 64, 74, 96, 111, 128, 148, 192, 222, 256, 296, 384, 444, 512, 592, 768, 888, 1184, 1536, 1776, 2368, 3552, 4736, 7104, 9472, 14208, 17449, 18944, 28416, 34898, 52347, 56832, 69796, 104694, 139592, 209388, 279184, 418776, 558368, 645613, 837552, 1116736, 1291226, 1675104, 1936839, 2233472, 2582452, 3350208, 3873678, 4466944, 5164904, 6700416, 7747356, 8933888, 10329808, 13400832, 15494712, 20659616, 26801664, 30989424, 41319232, 61978848, 82638464, 123957696, 165276928, 247915392, 330553856, 495830784, 991661568
80 divisors
| τ |
Total Divisors |
80 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-991661567 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.0125 |
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 |
80 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 991661568 can be divided by 80 positive divisors.
The sum of these divisors (counting 991661568) is 1, the average is 0.0125.