138674560 has 32 divisors (see below), whose sum is σ = 331520400. Its totient is φ = 55469568.

The previous prime is 138674537. The next prime is 138674579. The reversal of 138674560 is 65476831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107700 + ... + 108979.

Almost surely, 2^138674560 is an apocalyptic number.

138674560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138674560 is an abundant number, since it is smaller than the sum of its proper divisors (192845840).

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

138674560 is an equidigital number, since it uses as much as digits as its factorization.

138674560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216698 (or 216686 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 138674560 is about 11776.0163043365. The cubic root of 138674560 is about 517.6055593048.

The spelling of 138674560 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, five hundred sixty".