285872828 has 12 divisors (see below), whose sum is σ = 512479632. Its totient is φ = 139450080.

The previous prime is 285872737. The next prime is 285872857. The reversal of 285872828 is 828278582.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 871400 + ... + 871727.

It is an arithmetic number, because the mean of its divisors is an integer number (42706636).

Almost surely, 2^285872828 is an apocalyptic number.

It is an amenable number.

285872828 is a deficient number, since it is larger than the sum of its proper divisors (226606804).

285872828 is a wasteful number, since it uses less digits than its factorization.

285872828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743172 (or 1743170 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The square root of 285872828 is about 16907.7741882248. The cubic root of 285872828 is about 658.7555583332.

The spelling of 285872828 in words is "two hundred eighty-five million, eight hundred seventy-two thousand, eight hundred twenty-eight".