Base | Representation |
---|---|
bin | 1011111010011… |
… | …11100100100000 |
3 | 20222001111210012 |
4 | 11331033210200 |
5 | 201041100030 |
6 | 13530024052 |
7 | 2322324062 |
oct | 575174440 |
9 | 228044705 |
10 | 99940640 |
11 | 51460978 |
12 | 29578028 |
13 | 17922797 |
14 | d3b7732 |
15 | 8b92095 |
hex | 5f4f920 |
99940640 has 48 divisors (see below), whose sum is σ = 236711160. Its totient is φ = 39874560.
The previous prime is 99940639. The next prime is 99940693. The reversal of 99940640 is 4604999.
It can be written as a sum of positive squares in 4 ways, for example, as 43930384 + 56010256 = 6628^2 + 7484^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113000 + ... + 113880.
Almost surely, 299940640 is an apocalyptic number.
It is an amenable number.
99940640 is an abundant number, since it is smaller than the sum of its proper divisors (136770520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99940640 is a wasteful number, since it uses less digits than its factorization.
99940640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1605 (or 1597 counting only the distinct ones).
The product of its (nonzero) digits is 69984, while the sum is 41.
The square root of 99940640 is about 9997.0315594180. The cubic root of 99940640 is about 464.0670236118.
The spelling of 99940640 in words is "ninety-nine million, nine hundred forty thousand, six hundred forty".
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