285686232 has 64 divisors (see below), whose sum is σ = 773902080. Its totient is φ = 87361152.

The previous prime is 285686227. The next prime is 285686239. The reversal of 285686232 is 232686582.

285686232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285686239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49363 + ... + 54845.

It is an arithmetic number, because the mean of its divisors is an integer number (12092220).

Almost surely, 2^285686232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285686232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386951040).

285686232 is an abundant number, since it is smaller than the sum of its proper divisors (488215848).

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

285686232 is a wasteful number, since it uses less digits than its factorization.

285686232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672 (or 5668 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 285686232 is about 16902.2552341396. The cubic root of 285686232 is about 658.6121986590.

The spelling of 285686232 in words is "two hundred eighty-five million, six hundred eighty-six thousand, two hundred thirty-two".