13239992 has 16 divisors (see below), whose sum is σ = 24935040. Its totient is φ = 6590656.

The previous prime is 13239949. The next prime is 13239997. The reversal of 13239992 is 29993231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688 + ... + 5415.

It is an arithmetic number, because the mean of its divisors is an integer number (1558440).

Almost surely, 2^13239992 is an apocalyptic number.

It is an amenable number.

13239992 is a deficient number, since it is larger than the sum of its proper divisors (11695048).

13239992 is a wasteful number, since it uses less digits than its factorization.

13239992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342 (or 7338 counting only the distinct ones).

The product of its digits is 26244, while the sum is 38.

The square root of 13239992 is about 3638.6799804325. The cubic root of 13239992 is about 236.5715820727.

The spelling of 13239992 in words is "thirteen million, two hundred thirty-nine thousand, nine hundred ninety-two".