12912560 has 20 divisors (see below), whose sum is σ = 30021888. Its totient is φ = 5164992.

The previous prime is 12912553. The next prime is 12912577. The reversal of 12912560 is 6521921.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 80624 + ... + 80783.

Almost surely, 2^12912560 is an apocalyptic number.

12912560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12912560 is an abundant number, since it is smaller than the sum of its proper divisors (17109328).

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

12912560 is a wasteful number, since it uses less digits than its factorization.

12912560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161420 (or 161414 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12912560 is about 3593.4050704033. The cubic root of 12912560 is about 234.6051010728.

The spelling of 12912560 in words is "twelve million, nine hundred twelve thousand, five hundred sixty".