138772704 has 72 divisors (see below), whose sum is σ = 423766728. Its totient is φ = 39648000.

The previous prime is 138772691. The next prime is 138772723. The reversal of 138772704 is 407277831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10047 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (5885649).

Almost surely, 2^138772704 is an apocalyptic number.

138772704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138772704 is an abundant number, since it is smaller than the sum of its proper divisors (284994024).

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

138772704 is a wasteful number, since it uses less digits than its factorization.

138772704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29528 (or 29513 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 138772704 is about 11780.1826810962. The cubic root of 138772704 is about 517.7276386550.

The spelling of 138772704 in words is "one hundred thirty-eight million, seven hundred seventy-two thousand, seven hundred four".