12897904 has 20 divisors (see below), whose sum is σ = 25666264. Its totient is φ = 6274368.

The previous prime is 12897889. The next prime is 12897919. The reversal of 12897904 is 40979821.

It is an interprime number because it is at equal distance from previous prime (12897889) and next prime (12897919).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10302 + ... + 11485.

Almost surely, 2^12897904 is an apocalyptic number.

It is an amenable number.

12897904 is a deficient number, since it is larger than the sum of its proper divisors (12768360).

12897904 is a wasteful number, since it uses less digits than its factorization.

12897904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21832 (or 21826 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 12897904 is about 3591.3652000319. The cubic root of 12897904 is about 234.5163070600.

The spelling of 12897904 in words is "twelve million, eight hundred ninety-seven thousand, nine hundred four".