138676580 has 24 divisors (see below), whose sum is σ = 332824128. Its totient is φ = 47546208.

The previous prime is 138676553. The next prime is 138676619. The reversal of 138676580 is 85676831.

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, 495134 + ... + 495413.

It is an arithmetic number, because the mean of its divisors is an integer number (13867672).

Almost surely, 2^138676580 is an apocalyptic number.

138676580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138676580 is an abundant number, since it is smaller than the sum of its proper divisors (194147548).

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

138676580 is a wasteful number, since it uses less digits than its factorization.

138676580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990563 (or 990561 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 138676580 is about 11776.1020715685. The cubic root of 138676580 is about 517.6080725226.

The spelling of 138676580 in words is "one hundred thirty-eight million, six hundred seventy-six thousand, five hundred eighty".