138472568 has 32 divisors (see below), whose sum is σ = 280173600. Its totient is φ = 63781248.

The previous prime is 138472561. The next prime is 138472571. The reversal of 138472568 is 865274831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138472561) 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, 66893 + ... + 68931.

It is an arithmetic number, because the mean of its divisors is an integer number (8755425).

Almost surely, 2^138472568 is an apocalyptic number.

It is an amenable number.

138472568 is an abundant number, since it is smaller than the sum of its proper divisors (141701032).

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

138472568 is a wasteful number, since it uses less digits than its factorization.

138472568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711 (or 2707 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 138472568 is about 11767.4367642235. The cubic root of 138472568 is about 517.3541241305.

The spelling of 138472568 in words is "one hundred thirty-eight million, four hundred seventy-two thousand, five hundred sixty-eight".