285132 has 12 divisors (see below), whose sum is σ = 665336. Its totient is φ = 95040.

The previous prime is 285121. The next prime is 285139. The reversal of 285132 is 231582.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 285099 and 285108.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285132.

It is not an unprimeable number, because it can be changed into a prime (285139) by changing a digit.

285132 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 3 ways as a sum of consecutive naturals, for example, 11869 + ... + 11892.

2²⁸⁵¹³² is an apocalyptic number.

It is an amenable number.

285132 is an abundant number, since it is smaller than the sum of its proper divisors (380204).

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

285132 is a wasteful number, since it uses less digits than its factorization.

285132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23768 (or 23766 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 285132 is about 533.9775276170. The cubic root of 285132 is about 65.8186019843.

The spelling of 285132 in words is "two hundred eighty-five thousand, one hundred thirty-two".