138760724 has 24 divisors (see below), whose sum is σ = 257496960. Its totient is φ = 65244096.

The previous prime is 138760717. The next prime is 138760747. The reversal of 138760724 is 427067831.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 3749 + ... + 17075.

It is an arithmetic number, because the mean of its divisors is an integer number (10729040).

Almost surely, 2^138760724 is an apocalyptic number.

It is an amenable number.

138760724 is a deficient number, since it is larger than the sum of its proper divisors (118736236).

138760724 is a wasteful number, since it uses less digits than its factorization.

138760724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13487 (or 13485 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 138760724 is about 11779.6741890428. The cubic root of 138760724 is about 517.7127400584.

The spelling of 138760724 in words is "one hundred thirty-eight million, seven hundred sixty thousand, seven hundred twenty-four".