285432 has 32 divisors (see below), whose sum is σ = 816000. Its totient is φ = 81504.

The previous prime is 285421. The next prime is 285433. The reversal of 285432 is 234582.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285432.

It is not an unprimeable number, because it can be changed into a prime (285433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 1017.

It is an arithmetic number, because the mean of its divisors is an integer number (25500).

2²⁸⁵⁴³² is an apocalyptic number.

It is an amenable number.

285432 is an abundant number, since it is smaller than the sum of its proper divisors (530568).

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

285432 is a wasteful number, since it uses less digits than its factorization.

285432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1711 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 285432 is about 534.2583644642. The cubic root of 285432 is about 65.8416774483.

It can be divided in two parts, 285 and 432, that added together give a palindrome (717).

The spelling of 285432 in words is "two hundred eighty-five thousand, four hundred thirty-two".