12539972 has 24 divisors (see below), whose sum is σ = 22480416. Its totient is φ = 6119168.

The previous prime is 12539951. The next prime is 12539987. The reversal of 12539972 is 27993521.

12539972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35348 + ... + 35700.

It is an arithmetic number, because the mean of its divisors is an integer number (936684).

Almost surely, 2^12539972 is an apocalyptic number.

It is an amenable number.

12539972 is a deficient number, since it is larger than the sum of its proper divisors (9940444).

12539972 is a wasteful number, since it uses less digits than its factorization.

12539972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 545 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 12539972 is about 3541.1822884455. The cubic root of 12539972 is about 232.3265565813.

The spelling of 12539972 in words is "twelve million, five hundred thirty-nine thousand, nine hundred seventy-two".