13139952 has 40 divisors (see below), whose sum is σ = 38795136. Its totient is φ = 3754176.

The previous prime is 13139947. The next prime is 13139989. The reversal of 13139952 is 25993131.

It is a congruent number.

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, 19218 + ... + 19889.

Almost surely, 2^13139952 is an apocalyptic number.

13139952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13139952 is an abundant number, since it is smaller than the sum of its proper divisors (25655184).

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

13139952 is a wasteful number, since it uses less digits than its factorization.

13139952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39125 (or 39119 counting only the distinct ones).

The product of its digits is 7290, while the sum is 33.

The square root of 13139952 is about 3624.9071712252. The cubic root of 13139952 is about 235.9742383064.

The spelling of 13139952 in words is "thirteen million, one hundred thirty-nine thousand, nine hundred fifty-two".