138517080 has 64 divisors (see below), whose sum is σ = 447521760. Its totient is φ = 34096128.

The previous prime is 138517039. The next prime is 138517081. The reversal of 138517080 is 80715831.

138517080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138517081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42837 + ... + 45956.

Almost surely, 2^138517080 is an apocalyptic number.

138517080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138517080 is an abundant number, since it is smaller than the sum of its proper divisors (309004680).

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

138517080 is a wasteful number, since it uses less digits than its factorization.

138517080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88820 (or 88816 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 138517080 is about 11769.3279332339. The cubic root of 138517080 is about 517.4095526774.

The spelling of 138517080 in words is "one hundred thirty-eight million, five hundred seventeen thousand, eighty".