285369 has 16 divisors (see below), whose sum is σ = 442368. Its totient is φ = 160272.

The previous prime is 285343. The next prime is 285377. The reversal of 285369 is 963582.

It is a happy number.

It is not a de Polignac number, because 285369 - 2⁸ = 285113 is a prime.

It is a super-2 number, since 2×285369² = 162870932322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 8 + 3⁵ + 5⁵ + 6⁷ + 9 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285369.

It is not an unprimeable number, because it can be changed into a prime (285469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2184 + ... + 2310.

It is an arithmetic number, because the mean of its divisors is an integer number (27648).

2²⁸⁵³⁶⁹ is an apocalyptic number.

It is an amenable number.

285369 is a deficient number, since it is larger than the sum of its proper divisors (156999).

285369 is a wasteful number, since it uses less digits than its factorization.

285369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its digits is 12960, while the sum is 33.

The square root of 285369 is about 534.1994009731. The cubic root of 285369 is about 65.8368329426.

The spelling of 285369 in words is "two hundred eighty-five thousand, three hundred sixty-nine".