138587568 has 40 divisors (see below), whose sum is σ = 409164288. Its totient is φ = 39596352.

The previous prime is 138587513. The next prime is 138587569. The reversal of 138587568 is 865785831.

It is a self number, because there is not a number n which added to its sum of digits gives 138587568.

It is not an unprimeable number, because it can be changed into a prime (138587569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205896 + ... + 206567.

Almost surely, 2^138587568 is an apocalyptic number.

It is an amenable number.

138587568 is an abundant number, since it is smaller than the sum of its proper divisors (270576720).

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

138587568 is a wasteful number, since it uses less digits than its factorization.

138587568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412481 (or 412475 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 51.

The square root of 138587568 is about 11772.3221158784. The cubic root of 138587568 is about 517.4973035403.

The spelling of 138587568 in words is "one hundred thirty-eight million, five hundred eighty-seven thousand, five hundred sixty-eight".