138680976 has 60 divisors (see below), whose sum is σ = 416757552. Its totient is φ = 39622464.

The previous prime is 138680959. The next prime is 138681013. The reversal of 138680976 is 679086831.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 27130 + ... + 31833.

Almost surely, 2^138680976 is an apocalyptic number.

138680976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138680976 is an abundant number, since it is smaller than the sum of its proper divisors (278076576).

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

138680976 is a wasteful number, since it uses less digits than its factorization.

138680976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58988 (or 58975 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 138680976 is about 11776.2887192867. The cubic root of 138680976 is about 517.6135417976.

It can be divided in two parts, 138680 and 976, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 138680976 in words is "one hundred thirty-eight million, six hundred eighty thousand, nine hundred seventy-six".