138626132 has 12 divisors (see below), whose sum is σ = 242738496. Its totient is φ = 69272280.

The previous prime is 138626123. The next prime is 138626167. The reversal of 138626132 is 231626831.

It is a congruent number.

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, 1778 + ... + 16745.

It is an arithmetic number, because the mean of its divisors is an integer number (20228208).

Almost surely, 2^138626132 is an apocalyptic number.

It is an amenable number.

138626132 is a deficient number, since it is larger than the sum of its proper divisors (104112364).

138626132 is a wasteful number, since it uses less digits than its factorization.

138626132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20398 (or 20396 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 138626132 is about 11773.9599116015. The cubic root of 138626132 is about 517.5452994645.

The spelling of 138626132 in words is "one hundred thirty-eight million, six hundred twenty-six thousand, one hundred thirty-two".