138630232 has 32 divisors (see below), whose sum is σ = 294663600. Its totient is φ = 60614784.

The previous prime is 138630221. The next prime is 138630281. The reversal of 138630232 is 232036831.

138630232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138630232.

It is a congruent number.

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, 33103 + ... + 37054.

Almost surely, 2^138630232 is an apocalyptic number.

It is an amenable number.

138630232 is an abundant number, since it is smaller than the sum of its proper divisors (156033368).

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

138630232 is a wasteful number, since it uses less digits than its factorization.

138630232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70195 (or 70191 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 138630232 is about 11774.1340233582. The cubic root of 138630232 is about 517.5504017127.

The spelling of 138630232 in words is "one hundred thirty-eight million, six hundred thirty thousand, two hundred thirty-two".