12636904 has 24 divisors (see below), whose sum is σ = 27563490. Its totient is φ = 5415648.

The previous prime is 12636893. The next prime is 12636931. The reversal of 12636904 is 40963621.

It can be written as a sum of positive squares in only one way, i.e., 7300804 + 5336100 = 2702^2 + 2310^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15727 + ... + 16510.

Almost surely, 2^12636904 is an apocalyptic number.

12636904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12636904 is an abundant number, since it is smaller than the sum of its proper divisors (14926586).

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

12636904 is a wasteful number, since it uses less digits than its factorization.

12636904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32257 (or 32246 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 12636904 is about 3554.8423312434. The cubic root of 12636904 is about 232.9236366134.

The spelling of 12636904 in words is "twelve million, six hundred thirty-six thousand, nine hundred four".