12912904 has 16 divisors (see below), whose sum is σ = 24448320. Its totient is φ = 6393360.

The previous prime is 12912901. The next prime is 12912919. The reversal of 12912904 is 40921921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12912901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7012 + ... + 8659.

It is an arithmetic number, because the mean of its divisors is an integer number (1528020).

Almost surely, 2^12912904 is an apocalyptic number.

It is an amenable number.

12912904 is a deficient number, since it is larger than the sum of its proper divisors (11535416).

12912904 is a wasteful number, since it uses less digits than its factorization.

12912904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15780 (or 15776 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12912904 is about 3593.4529355482. The cubic root of 12912904 is about 234.6071844046.

The spelling of 12912904 in words is "twelve million, nine hundred twelve thousand, nine hundred four".