285424 has 10 divisors (see below), whose sum is σ = 553040. Its totient is φ = 142704.

The previous prime is 285421. The next prime is 285433. The reversal of 285424 is 424582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8904 + ... + 8935.

It is an arithmetic number, because the mean of its divisors is an integer number (55304).

2²⁸⁵⁴²⁴ is an apocalyptic number.

It is an amenable number.

285424 is a deficient number, since it is larger than the sum of its proper divisors (267616).

285424 is a wasteful number, since it uses less digits than its factorization.

285424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17847 (or 17841 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 285424 is about 534.2508773975. The cubic root of 285424 is about 65.8410623125.

The spelling of 285424 in words is "two hundred eighty-five thousand, four hundred twenty-four".