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12928136 = 2313124309
BaseRepresentation
bin110001010100…
…010010001000
3220022211001212
4301110102020
511302200021
61141032252
7214613234
oct61242210
926284055
1012928136
117330111
1243b5688
1328a85b0
141a075c4
15120585b
hexc54488

12928136 has 16 divisors (see below), whose sum is σ = 26105100. Its totient is φ = 5966784.

The previous prime is 12928129. The next prime is 12928141. The reversal of 12928136 is 63182921.

It can be written as a sum of positive squares in 2 ways, for example, as 11222500 + 1705636 = 3350^2 + 1306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62051 + ... + 62258.

Almost surely, 212928136 is an apocalyptic number.

It is an amenable number.

12928136 is an abundant number, since it is smaller than the sum of its proper divisors (13176964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12928136 is a wasteful number, since it uses less digits than its factorization.

12928136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124328 (or 124324 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 12928136 is about 3595.5717208811. The cubic root of 12928136 is about 234.6993953290.

The spelling of 12928136 in words is "twelve million, nine hundred twenty-eight thousand, one hundred thirty-six".

Divisors: 1 2 4 8 13 26 52 104 124309 248618 497236 994472 1616017 3232034 6464068 12928136