285288 has 16 divisors (see below), whose sum is σ = 713280. Its totient is φ = 95088.

The previous prime is 285287. The next prime is 285289. The reversal of 285288 is 882582.

It is an interprime number because it is at equal distance from previous prime (285287) and next prime (285289).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285288.

It is not an unprimeable number, because it can be changed into a prime (285281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5920 + ... + 5967.

It is an arithmetic number, because the mean of its divisors is an integer number (44580).

2²⁸⁵²⁸⁸ is an apocalyptic number.

It is an amenable number.

285288 is an abundant number, since it is smaller than the sum of its proper divisors (427992).

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

285288 is a wasteful number, since it uses less digits than its factorization.

285288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11896 (or 11892 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 285288 is about 534.1235812057. The cubic root of 285288 is about 65.8306032445.

The spelling of 285288 in words is "two hundred eighty-five thousand, two hundred eighty-eight".