138674312 has 96 divisors (see below), whose sum is σ = 326541600. Its totient is φ = 54867456.

The previous prime is 138674303. The next prime is 138674329. The reversal of 138674312 is 213476831.

Its product of digits (24192) is a multiple of the sum of its prime divisors (504).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320048 + ... + 320480.

It is an arithmetic number, because the mean of its divisors is an integer number (3401475).

Almost surely, 2^138674312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138674312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163270800).

138674312 is an abundant number, since it is smaller than the sum of its proper divisors (187867288).

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

138674312 is a wasteful number, since it uses less digits than its factorization.

138674312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 504 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 138674312 is about 11776.0057744551. The cubic root of 138674312 is about 517.6052507496.

The spelling of 138674312 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, three hundred twelve".