285876 has 24 divisors (see below), whose sum is σ = 741440. Its totient is φ = 95256.

The previous prime is 285871. The next prime is 285937. The reversal of 285876 is 678582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 285876.

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 285876.

It is not an unprimeable number, because it can be changed into a prime (285871) by changing a digit.

285876 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216 + ... + 1431.

2²⁸⁵⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

285876 is an abundant number, since it is smaller than the sum of its proper divisors (455564).

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

285876 is a wasteful number, since it uses less digits than its factorization.

285876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660 (or 2652 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 285876 is about 534.6737322891. The cubic root of 285876 is about 65.8757994807.

The spelling of 285876 in words is "two hundred eighty-five thousand, eight hundred seventy-six".