138582012 has 24 divisors (see below), whose sum is σ = 324814336. Its totient is φ = 45985968.

The previous prime is 138582007. The next prime is 138582047. The reversal of 138582012 is 210285831.

138582012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 23218 + ... + 28569.

Almost surely, 2^138582012 is an apocalyptic number.

138582012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138582012 is an abundant number, since it is smaller than the sum of its proper divisors (186232324).

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

138582012 is a wasteful number, since it uses less digits than its factorization.

138582012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52017 (or 52015 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 138582012 is about 11772.0861362802. The cubic root of 138582012 is about 517.4903879285.

The spelling of 138582012 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, twelve".