285896 has 16 divisors (see below), whose sum is σ = 577500. Its totient is φ = 131904.

The previous prime is 285871. The next prime is 285937. The reversal of 285896 is 698582.

It can be written as a sum of positive squares in 2 ways, for example, as 240100 + 45796 = 490^2 + 214^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285896.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271 + ... + 1478.

2²⁸⁵⁸⁹⁶ is an apocalyptic number.

285896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

285896 is an abundant number, since it is smaller than the sum of its proper divisors (291604).

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

285896 is a wasteful number, since it uses less digits than its factorization.

285896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2764 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 285896 is about 534.6924349568. The cubic root of 285896 is about 65.8773356773.

Subtracting 285896 from its reverse (698582), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 285896 in words is "two hundred eighty-five thousand, eight hundred ninety-six".