285437668 has 12 divisors (see below), whose sum is σ = 499643452. Its totient is φ = 142682400.

The previous prime is 285437657. The next prime is 285437671. The reversal of 285437668 is 866734582.

It can be written as a sum of positive squares in 2 ways, for example, as 256256064 + 29181604 = 16008^2 + 5402^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16546 + ... + 29062.

Almost surely, 2^285437668 is an apocalyptic number.

It is an amenable number.

285437668 is a deficient number, since it is larger than the sum of its proper divisors (214205784).

285437668 is a wasteful number, since it uses less digits than its factorization.

285437668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18222 (or 18220 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 285437668 is about 16894.9006507881. The cubic root of 285437668 is about 658.4211326508.

The spelling of 285437668 in words is "two hundred eighty-five million, four hundred thirty-seven thousand, six hundred sixty-eight".