12531804 has 24 divisors (see below), whose sum is σ = 29527680. Its totient is φ = 4136304.

The previous prime is 12531787. The next prime is 12531809. The reversal of 12531804 is 40813521.

It is a super-2 number, since 2×12531804² = 314092222988832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3834 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (1230320).

Almost surely, 2^12531804 is an apocalyptic number.

It is an amenable number.

12531804 is an abundant number, since it is smaller than the sum of its proper divisors (16995876).

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

12531804 is a wasteful number, since it uses less digits than its factorization.

12531804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249 (or 10247 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12531804 is about 3540.0288134421. The cubic root of 12531804 is about 232.2761031066.

The spelling of 12531804 in words is "twelve million, five hundred thirty-one thousand, eight hundred four".