139624028 has 12 divisors (see below), whose sum is σ = 249541152. Its totient is φ = 68326560.

The previous prime is 139624003. The next prime is 139624033. The reversal of 139624028 is 820426931.

139624028 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371153 + ... + 371528.

It is an arithmetic number, because the mean of its divisors is an integer number (20795096).

Almost surely, 2^139624028 is an apocalyptic number.

It is an amenable number.

139624028 is a deficient number, since it is larger than the sum of its proper divisors (109917124).

139624028 is a wasteful number, since it uses less digits than its factorization.

139624028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742732 (or 742730 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 139624028 is about 11816.2611684069. The cubic root of 139624028 is about 518.7841762358.

The spelling of 139624028 in words is "one hundred thirty-nine million, six hundred twenty-four thousand, twenty-eight".