138812304 has 40 divisors (see below), whose sum is σ = 359039520. Its totient is φ = 46213888.

The previous prime is 138812281. The next prime is 138812329. The reversal of 138812304 is 403218831.

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, 59284 + ... + 61580.

It is an arithmetic number, because the mean of its divisors is an integer number (8975988).

Almost surely, 2^138812304 is an apocalyptic number.

It is an amenable number.

138812304 is an abundant number, since it is smaller than the sum of its proper divisors (220227216).

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

138812304 is a wasteful number, since it uses less digits than its factorization.

138812304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567 (or 3561 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 138812304 is about 11781.8633500818. The cubic root of 138812304 is about 517.7768800021.

The spelling of 138812304 in words is "one hundred thirty-eight million, eight hundred twelve thousand, three hundred four".