-285 is an odd number.
-285 is a Harshad number, which means it is divisible by the sum of its digits (2 + 8 + 5 = 15, and -285 is divisible by 15).
In binary, -285 is represented as 1111111111111111111111111111111111111111111111111111111011100011.
In hex, -285 is represented as fffffffffffffee3.