285832 has 8 divisors (see below), whose sum is σ = 535950. Its totient is φ = 142912.

The previous prime is 285827. The next prime is 285839. The reversal of 285832 is 238582.

It can be written as a sum of positive squares in only one way, i.e., 285156 + 676 = 534^2 + 26^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2 + 8⁴ + 8⁶ + 5⁵ + 3⁴ + 2¹⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 285832.

It is not an unprimeable number, because it can be changed into a prime (285839) by changing a digit.

285832 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17857 + ... + 17872.

2²⁸⁵⁸³² is an apocalyptic number.

It is an amenable number.

285832 is a deficient number, since it is larger than the sum of its proper divisors (250118).

285832 is a wasteful number, since it uses less digits than its factorization.

285832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35735 (or 35731 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 285832 is about 534.6325841174. The cubic root of 285832 is about 65.8724195958.

The spelling of 285832 in words is "two hundred eighty-five thousand, eight hundred thirty-two".