285372928 has 20 divisors (see below), whose sum is σ = 570189510. Its totient is φ = 142686208.

The previous prime is 285372883. The next prime is 285372929. The reversal of 285372928 is 829273582.

It can be written as a sum of positive squares in only one way, i.e., 283855104 + 1517824 = 16848^2 + 1232^2 .

It is not an unprimeable number, because it can be changed into a prime (285372929) by changing a digit.

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, 278173 + ... + 279196.

Almost surely, 2^285372928 is an apocalyptic number.

It is an amenable number.

285372928 is a deficient number, since it is larger than the sum of its proper divisors (284816582).

285372928 is an frugal number, since it uses more digits than its factorization.

285372928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557387 (or 557371 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 285372928 is about 16892.9845794046. The cubic root of 285372928 is about 658.3713501449.

The spelling of 285372928 in words is "two hundred eighty-five million, three hundred seventy-two thousand, nine hundred twenty-eight".