138755372 has 24 divisors (see below), whose sum is σ = 287081760. Its totient is φ = 57415680.

The previous prime is 138755359. The next prime is 138755399. The reversal of 138755372 is 273557831.

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, 84629 + ... + 86252.

It is an arithmetic number, because the mean of its divisors is an integer number (11961740).

Almost surely, 2^138755372 is an apocalyptic number.

It is an amenable number.

138755372 is an abundant number, since it is smaller than the sum of its proper divisors (148326388).

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

138755372 is a wasteful number, since it uses less digits than its factorization.

138755372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170921 (or 170919 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 138755372 is about 11779.4470158832. The cubic root of 138755372 is about 517.7060839141.

The spelling of 138755372 in words is "one hundred thirty-eight million, seven hundred fifty-five thousand, three hundred seventy-two".