| Prime Factorization |
23 x 5 |
| Divisors |
1, 2, 4, 5, 8, 10, 20, 40 |
| Count of divisors |
8 |
| Sum of divisors |
90 |
| Previous integer |
39 |
| Next integer |
41 |
| Is prime? |
NO |
| Previous prime |
37 |
| Next prime |
41 |
| 40th prime number |
↻ calculating, please wait |
| Is a Fibonacci number? |
NO |
| 40th Fibonacci number |
102334155 |
| Zeckendorf representation |
34 + 5 + 1 |
| Is a Pell number? |
NO |
| Is a regular number? |
YES |
| Is a perfect number? |
NO |
| Is a perfect square number? |
NO |
| Is a perfect cube number? |
NO |
| Is power of 2? |
NO |
| Is power of 3? |
NO |
| Factorial 40! |
8.159152832479E+47 |
| Square 402 |
1600 |
| Square root √40 |
6.3245553203368 |
| Cube 403 |
64000 |
| Cubic root ∛40 |
3.4199518933534 |
| Natural logarithm |
3.6888794541139 |
| Decimal logarithm |
1.602059991328 |