Base | Representation |
---|---|
bin | 10111111111101001… |
… | …01001100111100110 |
3 | 1020020202121200020201 |
4 | 23333310221213212 |
5 | 202340233123010 |
6 | 5530132221114 |
7 | 634140366256 |
oct | 137764514746 |
9 | 36222550221 |
10 | 12881926630 |
11 | 551056a161 |
12 | 25b616a79a |
13 | 12a3aa09c1 |
14 | 8a2bd1966 |
15 | 505dcc23a |
hex | 2ffd299e6 |
12881926630 has 32 divisors (see below), whose sum is σ = 24621102144. Its totient is φ = 4835905536.
The previous prime is 12881926583. The next prime is 12881926633. The reversal of 12881926630 is 3662918821.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12881926633) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47322 + ... + 167341.
It is an arithmetic number, because the mean of its divisors is an integer number (769409442).
Almost surely, 212881926630 is an apocalyptic number.
12881926630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12881926630 is a deficient number, since it is larger than the sum of its proper divisors (11739175514).
12881926630 is a wasteful number, since it uses less digits than its factorization.
12881926630 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 215040.
The product of its (nonzero) digits is 248832, while the sum is 46.
The spelling of 12881926630 in words is "twelve billion, eight hundred eighty-one million, nine hundred twenty-six thousand, six hundred thirty".
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