285004 has 12 divisors (see below), whose sum is σ = 510664. Its totient is φ = 139104.

The previous prime is 284989. The next prime is 285007. The reversal of 285004 is 400582.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (285007) 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, 657 + ... + 1000.

2²⁸⁵⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

285004 is a deficient number, since it is larger than the sum of its proper divisors (225660).

285004 is a wasteful number, since it uses less digits than its factorization.

285004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 285004 is about 533.8576589317. The cubic root of 285004 is about 65.8087515267.

Adding to 285004 its reverse (400582), we get a palindrome (685586).

The spelling of 285004 in words is "two hundred eighty-five thousand, four".