138604116 has 96 divisors (see below), whose sum is σ = 380878848. Its totient is φ = 38413440.

The previous prime is 138604091. The next prime is 138604127. The reversal of 138604116 is 611406831.

138604116 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138604116² = 38422201944282912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725581 + ... + 725771.

It is an arithmetic number, because the mean of its divisors is an integer number (3967488).

Almost surely, 2^138604116 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 138604116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190439424).

138604116 is an abundant number, since it is smaller than the sum of its proper divisors (242274732).

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

138604116 is a wasteful number, since it uses less digits than its factorization.

138604116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 138604116 is about 11773.0249298980. The cubic root of 138604116 is about 517.5178999153.

The spelling of 138604116 in words is "one hundred thirty-eight million, six hundred four thousand, one hundred sixteen".