204280 has 16 divisors (see below), whose sum is σ = 459720. Its totient is φ = 81696.

The previous prime is 204251. The next prime is 204299. The reversal of 204280 is 82402.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2514 + ... + 2593.

2²⁰⁴²⁸⁰ is an apocalyptic number.

204280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204280 is an abundant number, since it is smaller than the sum of its proper divisors (255440).

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

204280 is a wasteful number, since it uses less digits than its factorization.

204280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 204280 is about 451.9734505477. The cubic root of 204280 is about 58.8945737692.

Adding to 204280 its reverse (82402), we get a palindrome (286682).

It can be divided in two parts, 204 and 280, that added together give a palindrome (484).

The spelling of 204280 in words is "two hundred four thousand, two hundred eighty".