284904868 has 12 divisors (see below), whose sum is σ = 499697100. Its totient is φ = 142134272.

The previous prime is 284904857. The next prime is 284904869. The reversal of 284904868 is 868409482.

It can be written as a sum of positive squares in 2 ways, for example, as 238146624 + 46758244 = 15432^2 + 6838^2 .

It is not an unprimeable number, because it can be changed into a prime (284904869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77521 + ... + 81112.

It is an arithmetic number, because the mean of its divisors is an integer number (41641425).

Almost surely, 2^284904868 is an apocalyptic number.

It is an amenable number.

284904868 is a deficient number, since it is larger than the sum of its proper divisors (214792232).

284904868 is a wasteful number, since it uses less digits than its factorization.

284904868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159086 (or 159084 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 284904868 is about 16879.1252142995. The cubic root of 284904868 is about 658.0112062836.

The spelling of 284904868 in words is "two hundred eighty-four million, nine hundred four thousand, eight hundred sixty-eight".