285232 has 10 divisors (see below), whose sum is σ = 552668. Its totient is φ = 142608.

The previous prime is 285227. The next prime is 285251. The reversal of 285232 is 232582.

It is a d-powerful number, because it can be written as 2⁴ + 8 + 2⁸ + 5⁵ + 3⁹ + 2¹⁸ .

It is an unprimeable 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, 8898 + ... + 8929.

2²⁸⁵²³² is an apocalyptic number.

It is an amenable number.

285232 is a deficient number, since it is larger than the sum of its proper divisors (267436).

285232 is a wasteful number, since it uses less digits than its factorization.

285232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17835 (or 17829 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 285232 is about 534.0711563078. The cubic root of 285232 is about 65.8262956033.

Subtracting from 285232 its reverse (232582), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 285232 in words is "two hundred eighty-five thousand, two hundred thirty-two".