138574832 has 20 divisors (see below), whose sum is σ = 292897176. Its totient is φ = 62988480.

The previous prime is 138574729. The next prime is 138574873. The reversal of 138574832 is 238475831.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 138574832.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393503 + ... + 393854.

Almost surely, 2^138574832 is an apocalyptic number.

It is an amenable number.

138574832 is an abundant number, since it is smaller than the sum of its proper divisors (154322344).

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

138574832 is a wasteful number, since it uses less digits than its factorization.

138574832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787376 (or 787370 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 138574832 is about 11771.7811736372. The cubic root of 138574832 is about 517.4814506331.

Subtracting 138574832 from its reverse (238475831), we obtain a palindrome (99900999).

The spelling of 138574832 in words is "one hundred thirty-eight million, five hundred seventy-four thousand, eight hundred thirty-two".