285823728 has 50 divisors (see below), whose sum is σ = 827260544. Its totient is φ = 95274144.

The previous prime is 285823721. The next prime is 285823763. The reversal of 285823728 is 827328582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285823721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 108976 + ... + 111567.

Almost surely, 2^285823728 is an apocalyptic number.

It is an amenable number.

285823728 is an abundant number, since it is smaller than the sum of its proper divisors (541436816).

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

285823728 is a wasteful number, since it uses less digits than its factorization.

285823728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220563 (or 220548 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 285823728 is about 16906.3221310846. The cubic root of 285823728 is about 658.7178413873.

The spelling of 285823728 in words is "two hundred eighty-five million, eight hundred twenty-three thousand, seven hundred twenty-eight".