138274756 has 24 divisors (see below), whose sum is σ = 255605504. Its totient is φ = 65348640.

The previous prime is 138274729. The next prime is 138274771. The reversal of 138274756 is 657472831.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 7635 + ... + 18298.

Almost surely, 2^138274756 is an apocalyptic number.

It is an amenable number.

138274756 is a deficient number, since it is larger than the sum of its proper divisors (117330748).

138274756 is a wasteful number, since it uses less digits than its factorization.

138274756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26011 (or 26009 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 138274756 is about 11759.0287013852. The cubic root of 138274756 is about 517.1076550391.

The spelling of 138274756 in words is "one hundred thirty-eight million, two hundred seventy-four thousand, seven hundred fifty-six".