285728484 has 12 divisors (see below), whose sum is σ = 666699824. Its totient is φ = 95242824.

The previous prime is 285728461. The next prime is 285728491. The reversal of 285728484 is 484827582.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11905342 + ... + 11905365.

Almost surely, 2^285728484 is an apocalyptic number.

It is an amenable number.

285728484 is an abundant number, since it is smaller than the sum of its proper divisors (380971340).

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

285728484 is a wasteful number, since it uses less digits than its factorization.

285728484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23810714 (or 23810712 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 48.

The square root of 285728484 is about 16903.5050803080. The cubic root of 285728484 is about 658.6446658763.

The spelling of 285728484 in words is "two hundred eighty-five million, seven hundred twenty-eight thousand, four hundred eighty-four".