12539156 has 12 divisors (see below), whose sum is σ = 25078368. Its totient is φ = 5373912.

The previous prime is 12539113. The next prime is 12539161. The reversal of 12539156 is 65193521.

12539156 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223886 + ... + 223941.

It is an arithmetic number, because the mean of its divisors is an integer number (2089864).

Almost surely, 2^12539156 is an apocalyptic number.

It is an amenable number.

12539156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12539156 is a wasteful number, since it uses less digits than its factorization.

12539156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447838 (or 447836 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 12539156 is about 3541.0670708135. The cubic root of 12539156 is about 232.3215171606.

The spelling of 12539156 in words is "twelve million, five hundred thirty-nine thousand, one hundred fifty-six".