138000880 has 20 divisors (see below), whose sum is σ = 320852232. Its totient is φ = 55200320.

The previous prime is 138000847. The next prime is 138000887. The reversal of 138000880 is 88000831.

138000880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138000887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862426 + ... + 862585.

Almost surely, 2^138000880 is an apocalyptic number.

138000880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138000880 is an abundant number, since it is smaller than the sum of its proper divisors (182851352).

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

138000880 is a wasteful number, since it uses less digits than its factorization.

138000880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725024 (or 1725018 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 138000880 is about 11747.3775796984. The cubic root of 138000880 is about 516.7660236715.

The spelling of 138000880 in words is "one hundred thirty-eight million, eight hundred eighty", and thus it is an aban number.