138472264 has 16 divisors (see below), whose sum is σ = 296726400. Its totient is φ = 59345232.

The previous prime is 138472237. The next prime is 138472277. The reversal of 138472264 is 462274831.

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, 1236304 + ... + 1236415.

It is an arithmetic number, because the mean of its divisors is an integer number (18545400).

Almost surely, 2^138472264 is an apocalyptic number.

138472264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138472264 is an abundant number, since it is smaller than the sum of its proper divisors (158254136).

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

138472264 is a wasteful number, since it uses less digits than its factorization.

138472264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472732 (or 2472728 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 138472264 is about 11767.4238472148. The cubic root of 138472264 is about 517.3537455338.

The spelling of 138472264 in words is "one hundred thirty-eight million, four hundred seventy-two thousand, two hundred sixty-four".