285250 has 32 divisors (see below), whose sum is σ = 614016. Its totient is φ = 97200.

The previous prime is 285227. The next prime is 285251. The reversal of 285250 is 52582.

It is not an unprimeable number, because it can be changed into a prime (285251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (19188).

2²⁸⁵²⁵⁰ is an apocalyptic number.

285250 is an abundant number, since it is smaller than the sum of its proper divisors (328766).

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

285250 is a wasteful number, since it uses less digits than its factorization.

285250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 285250 is about 534.0880077291. The cubic root of 285250 is about 65.8276802638.

It can be divided in two parts, 285 and 250, that added together give a palindrome (535).

The spelling of 285250 in words is "two hundred eighty-five thousand, two hundred fifty".