138585588 has 24 divisors (see below), whose sum is σ = 323779680. Its totient is φ = 46136160.

The previous prime is 138585571. The next prime is 138585607. The reversal of 138585588 is 885585831.

It is a self number, because there is not a number n which added to its sum of digits gives 138585588.

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, 2983 + ... + 16913.

It is an arithmetic number, because the mean of its divisors is an integer number (13490820).

Almost surely, 2^138585588 is an apocalyptic number.

It is an amenable number.

138585588 is an abundant number, since it is smaller than the sum of its proper divisors (185194092).

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

138585588 is a wasteful number, since it uses less digits than its factorization.

138585588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14767 (or 14765 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 51.

The square root of 138585588 is about 11772.2380200198. The cubic root of 138585588 is about 517.4948390346.

The spelling of 138585588 in words is "one hundred thirty-eight million, five hundred eighty-five thousand, five hundred eighty-eight".