138885900 has 36 divisors (see below), whose sum is σ = 401844072. Its totient is φ = 37036160.

The previous prime is 138885899. The next prime is 138885911. The reversal of 138885900 is 9588831.

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, 231177 + ... + 231776.

Almost surely, 2^138885900 is an apocalyptic number.

138885900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138885900 is an abundant number, since it is smaller than the sum of its proper divisors (262958172).

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

138885900 is a wasteful number, since it uses less digits than its factorization.

138885900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462970 (or 462963 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 138885900 is about 11784.9862112775. The cubic root of 138885900 is about 517.8683694299.

The spelling of 138885900 in words is "one hundred thirty-eight million, eight hundred eighty-five thousand, nine hundred".