138590676 has 72 divisors (see below), whose sum is σ = 415222080. Its totient is φ = 39595392.

The previous prime is 138590659. The next prime is 138590687. The reversal of 138590676 is 676095831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3381 + ... + 16988.

Almost surely, 2^138590676 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 138590676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207611040).

138590676 is an abundant number, since it is smaller than the sum of its proper divisors (276631404).

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

138590676 is a wasteful number, since it uses less digits than its factorization.

138590676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20395 (or 20381 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 138590676 is about 11772.4541196812. The cubic root of 138590676 is about 517.5011720200.

The spelling of 138590676 in words is "one hundred thirty-eight million, five hundred ninety thousand, six hundred seventy-six".