639492084 is an even 9-digits composite number following 639492083
and preceding 639492085. In scientific notation, it is written as 6.39492084 × 10^8.
The sum of its digits is 45. It has a total of 7 prime factors and 72 positive divisors.
There are 166095360 positive integers (up to 639492084) that are relatively prime to 639492084.
Prime Factorization
2 × 2 × 7 × 11 × 9 × 9 × 25633
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
35527338 |
Product of the distinct prime numbers |
The prime factorization of 639492084 is 2 × 2 × 7 × 11 × 9 × 9 × 25633.
Since it has a total of 7 prime factors.
1, 2, 4, 7, 9, 11, 14, 18, 22, 28, 36, 44, 63, 77, 81, 99, 126, 154, 162, 198, 252, 308, 324, 396, 567, 693, 891, 1134, 1386, 1782, 2268, 2772, 3564, 6237, 12474, 24948, 25633, 51266, 102532, 179431, 230697, 281963, 358862, 461394, 563926, 717724, 922788, 1127852, 1614879, 1973741, 2076273, 2537667, 3229758, 3947482, 4152546, 5075334, 6459516, 7894964, 8305092, 10150668, 14533911, 17763669, 22839003, 29067822, 35527338, 45678006, 58135644, 71054676, 91356012, 159873021, 319746042, 639492084
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 |
-639492083 |
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 639492084 can be divided by 72 positive divisors.
The sum of these divisors (counting 639492084) is 1, the average is 0.013888888888889.