204530 has 16 divisors (see below), whose sum is σ = 373464. Its totient is φ = 80640.

The previous prime is 204521. The next prime is 204557. The reversal of 204530 is 35402.

It can be written as a sum of positive squares in 4 ways, for example, as 37249 + 167281 = 193^2 + 409^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040 + ... + 1220.

2²⁰⁴⁵³⁰ is an apocalyptic number.

204530 is a deficient number, since it is larger than the sum of its proper divisors (168934).

204530 is a wasteful number, since it uses less digits than its factorization.

204530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 204530 is about 452.2499309010. The cubic root of 204530 is about 58.9185892401.

Adding to 204530 its reverse (35402), we get a palindrome (239932).

The spelling of 204530 in words is "two hundred four thousand, five hundred thirty".