139870432 has 24 divisors (see below), whose sum is σ = 296553096. Its totient is φ = 64555392.

The previous prime is 139870427. The next prime is 139870433. The reversal of 139870432 is 234078931.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 139870391 and 139870400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139870433) 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, 167698 + ... + 168529.

It is an arithmetic number, because the mean of its divisors is an integer number (12356379).

Almost surely, 2^139870432 is an apocalyptic number.

It is an amenable number.

139870432 is an abundant number, since it is smaller than the sum of its proper divisors (156682664).

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

139870432 is a wasteful number, since it uses less digits than its factorization.

139870432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336250 (or 336242 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 139870432 is about 11826.6830514731. The cubic root of 139870432 is about 519.0891747727.

The spelling of 139870432 in words is "one hundred thirty-nine million, eight hundred seventy thousand, four hundred thirty-two".