Base | Representation |
---|---|
bin | 10111111111100001… |
… | …10110111010110000 |
3 | 1020020200202011121010 |
4 | 23333300312322300 |
5 | 202340004320103 |
6 | 5530055030520 |
7 | 634126056102 |
oct | 137760667260 |
9 | 36220664533 |
10 | 12880932528 |
11 | 550aa50292 |
12 | 25b596b440 |
13 | 12a3813389 |
14 | 8a2a13572 |
15 | 505c82903 |
hex | 2ffc36eb0 |
12880932528 has 20 divisors (see below), whose sum is σ = 33275742488. Its totient is φ = 4293644160.
The previous prime is 12880932527. The next prime is 12880932587. The reversal of 12880932528 is 82523908821.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 268352761 = 12880932528 / (1 + 2 + 8 + 8 + 0 + 9 + 3 + 2 + 5 + 2 + 8).
It is not an unprimeable number, because it can be changed into a prime (12880932527) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134176333 + ... + 134176428.
Almost surely, 212880932528 is an apocalyptic number.
It is an amenable number.
12880932528 is an abundant number, since it is smaller than the sum of its proper divisors (20394809960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12880932528 is a wasteful number, since it uses less digits than its factorization.
12880932528 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 268352772 (or 268352766 counting only the distinct ones).
The product of its (nonzero) digits is 552960, while the sum is 48.
The spelling of 12880932528 in words is "twelve billion, eight hundred eighty million, nine hundred thirty-two thousand, five hundred twenty-eight".
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