285304 has 16 divisors (see below), whose sum is σ = 563400. Its totient is φ = 135072.

The previous prime is 285301. The next prime is 285317. The reversal of 285304 is 403582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787 + ... + 1090.

2²⁸⁵³⁰⁴ is an apocalyptic number.

It is an amenable number.

285304 is a deficient number, since it is larger than the sum of its proper divisors (278096).

285304 is a wasteful number, since it uses less digits than its factorization.

285304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 285304 is about 534.1385588029. The cubic root of 285304 is about 65.8318338956.

Adding to 285304 its reverse (403582), we get a palindrome (688886).

The spelling of 285304 in words is "two hundred eighty-five thousand, three hundred four".