138462772 has 24 divisors (see below), whose sum is σ = 278768000. Its totient is φ = 58946400.

The previous prime is 138462767. The next prime is 138462787. The reversal of 138462772 is 277264831.

It is a congruent number.

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, 12147 + ... + 20602.

Almost surely, 2^138462772 is an apocalyptic number.

It is an amenable number.

138462772 is an abundant number, since it is smaller than the sum of its proper divisors (140305228).

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

138462772 is a wasteful number, since it uses less digits than its factorization.

138462772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32911 (or 32909 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 138462772 is about 11767.0205234800. The cubic root of 138462772 is about 517.3419240715.

The spelling of 138462772 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, seven hundred seventy-two".