138530604 has 24 divisors (see below), whose sum is σ = 323496880. Its totient is φ = 46139904.

The previous prime is 138530551. The next prime is 138530617. The reversal of 138530604 is 406035831.

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, 13992 + ... + 21744.

Almost surely, 2^138530604 is an apocalyptic number.

It is an amenable number.

138530604 is an abundant number, since it is smaller than the sum of its proper divisors (184966276).

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

138530604 is a wasteful number, since it uses less digits than its factorization.

138530604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9247 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 138530604 is about 11769.9024634871. The cubic root of 138530604 is about 517.4263910800.

The spelling of 138530604 in words is "one hundred thirty-eight million, five hundred thirty thousand, six hundred four".