138960264 has 16 divisors (see below), whose sum is σ = 347400720. Its totient is φ = 46320080.

The previous prime is 138960253. The next prime is 138960323. The reversal of 138960264 is 462069831.

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, 2894982 + ... + 2895029.

It is an arithmetic number, because the mean of its divisors is an integer number (21712545).

Almost surely, 2^138960264 is an apocalyptic number.

It is an amenable number.

138960264 is an abundant number, since it is smaller than the sum of its proper divisors (208440456).

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

138960264 is a wasteful number, since it uses less digits than its factorization.

138960264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790020 (or 5790016 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 138960264 is about 11788.1408203330. The cubic root of 138960264 is about 517.9607807598.

The spelling of 138960264 in words is "one hundred thirty-eight million, nine hundred sixty thousand, two hundred sixty-four".