285632 has 14 divisors (see below), whose sum is σ = 566928. Its totient is φ = 142784.

The previous prime is 285631. The next prime is 285641. The reversal of 285632 is 236582.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 8 + 6⁷ + 5⁵ + 3 + 2¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2168 + ... + 2295.

2²⁸⁵⁶³² is an apocalyptic number.

It is an amenable number.

285632 is a deficient number, since it is larger than the sum of its proper divisors (281296).

285632 is an equidigital number, since it uses as much as digits as its factorization.

285632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475 (or 4465 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 285632 is about 534.4455070445. The cubic root of 285632 is about 65.8570521097.

The spelling of 285632 in words is "two hundred eighty-five thousand, six hundred thirty-two".