12431872 has 20 divisors (see below), whose sum is σ = 24840486. Its totient is φ = 6215680.

The previous prime is 12431857. The next prime is 12431893. The reversal of 12431872 is 27813421.

It can be written as a sum of positive squares in only one way, i.e., 7485696 + 4946176 = 2736^2 + 2224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12431872.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11629 + ... + 12652.

Almost surely, 2^12431872 is an apocalyptic number.

It is an amenable number.

12431872 is a deficient number, since it is larger than the sum of its proper divisors (12408614).

12431872 is an frugal number, since it uses more digits than its factorization.

12431872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24299 (or 24283 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 12431872 is about 3525.8859879469. The cubic root of 12431872 is about 231.6570438067.

The spelling of 12431872 in words is "twelve million, four hundred thirty-one thousand, eight hundred seventy-two".