285992 has 16 divisors (see below), whose sum is σ = 612960. Its totient is φ = 122544.

The previous prime is 285983. The next prime is 285997. The reversal of 285992 is 299582.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285992.

It is not an unprimeable number, because it can be changed into a prime (285997) by changing a digit.

285992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (38310).

2²⁸⁵⁹⁹² is an apocalyptic number.

It is an amenable number.

285992 is an abundant number, since it is smaller than the sum of its proper divisors (326968).

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

285992 is a wasteful number, since it uses less digits than its factorization.

285992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120 (or 5116 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 285992 is about 534.7821986566. The cubic root of 285992 is about 65.8847084242.

The spelling of 285992 in words is "two hundred eighty-five thousand, nine hundred ninety-two".