12523904 has 16 divisors (see below), whose sum is σ = 24950220. Its totient is φ = 6261888.

The previous prime is 12523877. The next prime is 12523909. The reversal of 12523904 is 40932521.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48794 + ... + 49049.

Almost surely, 2^12523904 is an apocalyptic number.

It is an amenable number.

12523904 is a deficient number, since it is larger than the sum of its proper divisors (12426316).

12523904 is an frugal number, since it uses more digits than its factorization.

12523904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97857 (or 97845 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 12523904 is about 3538.9128274090. The cubic root of 12523904 is about 232.2272841992.

The spelling of 12523904 in words is "twelve million, five hundred twenty-three thousand, nine hundred four".