285728044 has 24 divisors (see below), whose sum is σ = 605072160. Its totient is φ = 115251456.

The previous prime is 285728017. The next prime is 285728083. The reversal of 285728044 is 440827582.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 285727988 and 285728006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299659 + ... + 300610.

It is an arithmetic number, because the mean of its divisors is an integer number (25211340).

Almost surely, 2^285728044 is an apocalyptic number.

It is an amenable number.

285728044 is an abundant number, since it is smaller than the sum of its proper divisors (319344116).

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

285728044 is a wasteful number, since it uses less digits than its factorization.

285728044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600297 (or 600295 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 285728044 is about 16903.4920652509. The cubic root of 285728044 is about 658.6443277886.

The spelling of 285728044 in words is "two hundred eighty-five million, seven hundred twenty-eight thousand, forty-four".