138602528 has 24 divisors (see below), whose sum is σ = 274111488. Its totient is φ = 68986944.

The previous prime is 138602521. The next prime is 138602533. The reversal of 138602528 is 825206831.

It is not an unprimeable number, because it can be changed into a prime (138602521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2576 + ... + 16847.

It is an arithmetic number, because the mean of its divisors is an integer number (11421312).

Almost surely, 2^138602528 is an apocalyptic number.

It is an amenable number.

138602528 is a deficient number, since it is larger than the sum of its proper divisors (135508960).

138602528 is a wasteful number, since it uses less digits than its factorization.

138602528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19656 (or 19648 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 138602528 is about 11772.9574873946. The cubic root of 138602528 is about 517.5159234911.

The spelling of 138602528 in words is "one hundred thirty-eight million, six hundred two thousand, five hundred twenty-eight".