Base | Representation |
---|---|
bin | 10010101001010010… |
… | …01010000110000100 |
3 | 221211121121012020200 |
4 | 21110221022012010 |
5 | 131000030304423 |
6 | 4333141130500 |
7 | 503025452406 |
oct | 112451120604 |
9 | 27747535220 |
10 | 10010009988 |
11 | 4277431730 |
12 | 1b343b9a30 |
13 | c36ab3744 |
14 | 6ad60ab76 |
15 | 3d8bd8d43 |
hex | 254a4a184 |
10010009988 has 72 divisors (see below), whose sum is σ = 28493826816. Its totient is φ = 2935483200.
The previous prime is 10010009987. The next prime is 10010010013. The reversal of 10010009988 is 88990001001.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (10010009981) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395431 + ... + 419982.
Almost surely, 210010009988 is an apocalyptic number.
10010009988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
10010009988 is an abundant number, since it is smaller than the sum of its proper divisors (18483816828).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10010009988 is a wasteful number, since it uses less digits than its factorization.
10010009988 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 815465 (or 815460 counting only the distinct ones).
The product of its (nonzero) digits is 5184, while the sum is 36.
The spelling of 10010009988 in words is "ten billion, ten million, nine thousand, nine hundred eighty-eight".
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