138633632 has 24 divisors (see below), whose sum is σ = 275026752. Its totient is φ = 68785600.

The previous prime is 138633629. The next prime is 138633641. The reversal of 138633632 is 236336831.

It is a super-2 number, since 2×138633632² = 38438567843022848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138633592 and 138633601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12344 + ... + 20727.

It is an arithmetic number, because the mean of its divisors is an integer number (11459448).

Almost surely, 2^138633632 is an apocalyptic number.

It is an amenable number.

138633632 is a deficient number, since it is larger than the sum of its proper divisors (136393120).

138633632 is a wasteful number, since it uses less digits than its factorization.

138633632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33212 (or 33204 counting only the distinct ones).

The product of its digits is 46656, while the sum is 35.

The square root of 138633632 is about 11774.2784067645. The cubic root of 138633632 is about 517.5546327691.

The spelling of 138633632 in words is "one hundred thirty-eight million, six hundred thirty-three thousand, six hundred thirty-two".