138716632 has 16 divisors (see below), whose sum is σ = 262670400. Its totient is φ = 68671200.

The previous prime is 138716621. The next prime is 138716671. The reversal of 138716632 is 236617831.

It is a junction number, because it is equal to n+sod(n) for n = 138716591 and 138716600.

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 in 3 ways as a sum of consecutive naturals, for example, 85032 + ... + 86647.

It is an arithmetic number, because the mean of its divisors is an integer number (16416900).

Almost surely, 2^138716632 is an apocalyptic number.

It is an amenable number.

138716632 is a deficient number, since it is larger than the sum of its proper divisors (123953768).

138716632 is a wasteful number, since it uses less digits than its factorization.

138716632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171786 (or 171782 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 138716632 is about 11777.8025115044. The cubic root of 138716632 is about 517.6578988716.

It can be divided in two parts, 13871 and 6632, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 138716632 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, six hundred thirty-two".