204281 has 12 divisors (see below), whose sum is σ = 259920. Its totient is φ = 158760.

The previous prime is 204251. The next prime is 204299. The reversal of 204281 is 182402.

204281 = 39² + 40² + ... + 87².

It is not a de Polignac number, because 204281 - 2¹⁴ = 187897 is a prime.

It is a super-2 number, since 2×204281² = 83461453922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204281.

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 11 ways as a sum of consecutive naturals, for example, 350 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (21660).

2²⁰⁴²⁸¹ is an apocalyptic number.

It is an amenable number.

204281 is a deficient number, since it is larger than the sum of its proper divisors (55639).

204281 is a wasteful number, since it uses less digits than its factorization.

204281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 204281 is about 451.9745568060. The cubic root of 204281 is about 58.8946698701.

Adding to 204281 its reverse (182402), we get a palindrome (386683).

The spelling of 204281 in words is "two hundred four thousand, two hundred eighty-one".