204588 has 18 divisors (see below), whose sum is σ = 517244. Its totient is φ = 68184.

The previous prime is 204587. The next prime is 204599. The reversal of 204588 is 885402.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (204583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2806 + ... + 2877.

2²⁰⁴⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

204588 is an abundant number, since it is smaller than the sum of its proper divisors (312656).

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

204588 is a wasteful number, since it uses less digits than its factorization.

204588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 204588 is about 452.3140501908. The cubic root of 204588 is about 58.9241580323.

The spelling of 204588 in words is "two hundred four thousand, five hundred eighty-eight".