285268 has 6 divisors (see below), whose sum is σ = 499226. Its totient is φ = 142632.

The previous prime is 285251. The next prime is 285281. The reversal of 285268 is 862582.

285268 is nontrivially palindromic in base 13 and base 16.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 71824 = 462^2 + 268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655 + ... + 35662.

2²⁸⁵²⁶⁸ is an apocalyptic number.

It is an amenable number.

285268 is a deficient number, since it is larger than the sum of its proper divisors (213958).

285268 is a wasteful number, since it uses less digits than its factorization.

285268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71321 (or 71319 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 285268 is about 534.1048586186. The cubic root of 285268 is about 65.8290648659.

The spelling of 285268 in words is "two hundred eighty-five thousand, two hundred sixty-eight".