138597232 has 10 divisors (see below), whose sum is σ = 268532168. Its totient is φ = 69298608.

The previous prime is 138597223. The next prime is 138597253. The reversal of 138597232 is 232795831.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4331148 + ... + 4331179.

Almost surely, 2^138597232 is an apocalyptic number.

It is an amenable number.

138597232 is a deficient number, since it is larger than the sum of its proper divisors (129934936).

138597232 is an equidigital number, since it uses as much as digits as its factorization.

138597232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8662335 (or 8662329 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 138597232 is about 11772.7325630034. The cubic root of 138597232 is about 517.5093319826.

The spelling of 138597232 in words is "one hundred thirty-eight million, five hundred ninety-seven thousand, two hundred thirty-two".