204258 has 16 divisors (see below), whose sum is σ = 416160. Its totient is φ = 66816.

The previous prime is 204251. The next prime is 204299. The reversal of 204258 is 852402.

It is not an unprimeable number, because it can be changed into a prime (204251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (26010).

2²⁰⁴²⁵⁸ is an apocalyptic number.

204258 is an abundant number, since it is smaller than the sum of its proper divisors (211902).

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

204258 is a wasteful number, since it uses less digits than its factorization.

With its successor (204259) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (641).

204258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 204258 is about 451.9491121797. The cubic root of 204258 is about 58.8924594700.

It can be divided in two parts, 20 and 4258, that added together give a triangular number (4278 = T₉₂).

The spelling of 204258 in words is "two hundred four thousand, two hundred fifty-eight".