139312432 has 40 divisors (see below), whose sum is σ = 315662336. Its totient is φ = 58314816.

The previous prime is 139312373. The next prime is 139312447. The reversal of 139312432 is 234213931.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 139312432.

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 7 ways as a sum of consecutive naturals, for example, 9648 + ... + 19279.

Almost surely, 2^139312432 is an apocalyptic number.

It is an amenable number.

139312432 is an abundant number, since it is smaller than the sum of its proper divisors (176349904).

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

139312432 is a wasteful number, since it uses less digits than its factorization.

139312432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28985 (or 28979 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 139312432 is about 11803.0687535064. The cubic root of 139312432 is about 518.3979688929.

The spelling of 139312432 in words is "one hundred thirty-nine million, three hundred twelve thousand, four hundred thirty-two".