138265572 has 24 divisors (see below), whose sum is σ = 323443456. Its totient is φ = 45970848.

The previous prime is 138265553. The next prime is 138265637. The reversal of 138265572 is 275562831.

138265572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138265572.

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, 9748 + ... + 19275.

Almost surely, 2^138265572 is an apocalyptic number.

138265572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138265572 is an abundant number, since it is smaller than the sum of its proper divisors (185177884).

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

138265572 is a wasteful number, since it uses less digits than its factorization.

138265572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29427 (or 29425 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 138265572 is about 11758.6381864568. The cubic root of 138265572 is about 517.0962062831.

The spelling of 138265572 in words is "one hundred thirty-eight million, two hundred sixty-five thousand, five hundred seventy-two".