138804 has 24 divisors (see below), whose sum is σ = 332640. Its totient is φ = 45024.

The previous prime is 138799. The next prime is 138821. The reversal of 138804 is 408831.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 138804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2¹³⁸⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

138804 is an abundant number, since it is smaller than the sum of its proper divisors (193836).

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

138804 is a wasteful number, since it uses less digits than its factorization.

138804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 138804 is about 372.5640884465. The cubic root of 138804 is about 51.7766555017.

The spelling of 138804 in words is "one hundred thirty-eight thousand, eight hundred four".