204030 has 24 divisors (see below), whose sum is σ = 530712. Its totient is φ = 54384.

The previous prime is 204023. The next prime is 204047. The reversal of 204030 is 30402.

204030 = 200² + 201² + ... + 204².

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

204030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1044 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (22113).

2²⁰⁴⁰³⁰ is an apocalyptic number.

204030 is an abundant number, since it is smaller than the sum of its proper divisors (326682).

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

204030 is a wasteful number, since it uses less digits than its factorization.

204030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 204030 is about 451.6968009628. The cubic root of 204030 is about 58.8705386967.

Adding to 204030 its reverse (30402), we get a palindrome (234432).

The spelling of 204030 in words is "two hundred four thousand, thirty".