285705532 has 24 divisors (see below), whose sum is σ = 573876576. Its totient is φ = 121916928.

The previous prime is 285705523. The next prime is 285705533. The reversal of 285705532 is 235507582.

285705532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 285705491 and 285705500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285705533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15373 + ... + 28420.

It is an arithmetic number, because the mean of its divisors is an integer number (23911524).

Almost surely, 2^285705532 is an apocalyptic number.

It is an amenable number.

285705532 is an abundant number, since it is smaller than the sum of its proper divisors (288171044).

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

285705532 is a wasteful number, since it uses less digits than its factorization.

285705532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44037 (or 44035 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 285705532 is about 16902.8261542264. The cubic root of 285705532 is about 658.6270295326.

The spelling of 285705532 in words is "two hundred eighty-five million, seven hundred five thousand, five hundred thirty-two".