138312932 has 24 divisors (see below), whose sum is σ = 257275200. Its totient is φ = 64876896.

The previous prime is 138312931. The next prime is 138312949. The reversal of 138312932 is 239213831.

It is not an unprimeable number, because it can be changed into a prime (138312931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 16662.

It is an arithmetic number, because the mean of its divisors is an integer number (10719800).

Almost surely, 2^138312932 is an apocalyptic number.

It is an amenable number.

138312932 is a deficient number, since it is larger than the sum of its proper divisors (118962268).

138312932 is a wasteful number, since it uses less digits than its factorization.

138312932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795 (or 17793 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 138312932 is about 11760.6518526823. The cubic root of 138312932 is about 517.1552397319.

The spelling of 138312932 in words is "one hundred thirty-eight million, three hundred twelve thousand, nine hundred thirty-two".