Base | Representation |
---|---|
bin | 11000000010101100… |
… | …00010001110011011 |
3 | 1020022112122200010020 |
4 | 30001112002032123 |
5 | 202413302033022 |
6 | 5532443321523 |
7 | 634600363161 |
oct | 140126021633 |
9 | 36275580106 |
10 | 12907455387 |
11 | 5523a16302 |
12 | 26028202a3 |
13 | 12a916b788 |
14 | 8a6359231 |
15 | 50827135c |
hex | 30158239b |
12907455387 has 16 divisors (see below), whose sum is σ = 17345072640. Its totient is φ = 8537544000.
The previous prime is 12907455371. The next prime is 12907455391. The reversal of 12907455387 is 78355470921.
It is not a de Polignac number, because 12907455387 - 24 = 12907455371 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12907455317) 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, 363087 + ... + 397047.
It is an arithmetic number, because the mean of its divisors is an integer number (1084067040).
Almost surely, 212907455387 is an apocalyptic number.
12907455387 is a deficient number, since it is larger than the sum of its proper divisors (4437617253).
12907455387 is a wasteful number, since it uses less digits than its factorization.
12907455387 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34954.
The product of its (nonzero) digits is 2116800, while the sum is 51.
The spelling of 12907455387 in words is "twelve billion, nine hundred seven million, four hundred fifty-five thousand, three hundred eighty-seven".
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