285244 has 12 divisors (see below), whose sum is σ = 516600. Its totient is φ = 137648.

The previous prime is 285227. The next prime is 285251. The reversal of 285244 is 442582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (43050).

2²⁸⁵²⁴⁴ is an apocalyptic number.

It is an amenable number.

285244 is a deficient number, since it is larger than the sum of its proper divisors (231356).

285244 is a wasteful number, since it uses less digits than its factorization.

285244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2490 counting only the distinct ones).

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

The square root of 285244 is about 534.0823906477. The cubic root of 285244 is about 65.8272187167.

It can be divided in two parts, 285 and 244, that added together give a square (529 = 23²).

The spelling of 285244 in words is "two hundred eighty-five thousand, two hundred forty-four".