285430 has 32 divisors (see below), whose sum is σ = 575424. Its totient is φ = 101376.

The previous prime is 285421. The next prime is 285433. The reversal of 285430 is 34582.

285430 is nontrivially palindromic in base 9.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3874 + ... + 3946.

It is an arithmetic number, because the mean of its divisors is an integer number (17982).

2²⁸⁵⁴³⁰ is an apocalyptic number.

285430 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

285430 is a wasteful number, since it uses less digits than its factorization.

285430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120.

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

The square root of 285430 is about 534.2564927074. The cubic root of 285430 is about 65.8415236654.

The spelling of 285430 in words is "two hundred eighty-five thousand, four hundred thirty".