138627572 has 12 divisors (see below), whose sum is σ = 255366720. Its totient is φ = 65665656.

The previous prime is 138627539. The next prime is 138627583. The reversal of 138627572 is 275726831.

138627572 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

138627572 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911948 + ... + 912099.

It is an arithmetic number, because the mean of its divisors is an integer number (21280560).

Almost surely, 2^138627572 is an apocalyptic number.

It is an amenable number.

138627572 is a deficient number, since it is larger than the sum of its proper divisors (116739148).

138627572 is a wasteful number, since it uses less digits than its factorization.

138627572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824070 (or 1824068 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 138627572 is about 11774.0210633411. The cubic root of 138627572 is about 517.5470914851.

The spelling of 138627572 in words is "one hundred thirty-eight million, six hundred twenty-seven thousand, five hundred seventy-two".