285798 has 32 divisors (see below), whose sum is σ = 633600. Its totient is φ = 85536.

The previous prime is 285781. The next prime is 285823. The reversal of 285798 is 897582.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2568 + ... + 2676.

It is an arithmetic number, because the mean of its divisors is an integer number (19800).

2²⁸⁵⁷⁹⁸ is an apocalyptic number.

285798 is an abundant number, since it is smaller than the sum of its proper divisors (347802).

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

285798 is a wasteful number, since it uses less digits than its factorization.

285798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156.

The product of its digits is 40320, while the sum is 39.

The square root of 285798 is about 534.6007856335. The cubic root of 285798 is about 65.8698076290.

The spelling of 285798 in words is "two hundred eighty-five thousand, seven hundred ninety-eight".