138990152 has 32 divisors (see below), whose sum is σ = 298542720. Its totient is φ = 59425920.

The previous prime is 138990121. The next prime is 138990161. The reversal of 138990152 is 251099831.

138990152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22877 + ... + 28307.

It is an arithmetic number, because the mean of its divisors is an integer number (9329460).

Almost surely, 2^138990152 is an apocalyptic number.

It is an amenable number.

138990152 is an abundant number, since it is smaller than the sum of its proper divisors (159552568).

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

138990152 is a wasteful number, since it uses less digits than its factorization.

138990152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901 (or 5897 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 138990152 is about 11789.4084669249. The cubic root of 138990152 is about 517.9979129625.

The spelling of 138990152 in words is "one hundred thirty-eight million, nine hundred ninety thousand, one hundred fifty-two".