285047872 has 28 divisors (see below), whose sum is σ = 566184796. Its totient is φ = 142387200.

The previous prime is 285047869. The next prime is 285047881. The reversal of 285047872 is 278740582.

It can be written as a sum of positive squares in 2 ways, for example, as 119771136 + 165276736 = 10944^2 + 12856^2 .

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, 114028 + ... + 116500.

Almost surely, 2^285047872 is an apocalyptic number.

It is an amenable number.

285047872 is a deficient number, since it is larger than the sum of its proper divisors (281136924).

285047872 is a wasteful number, since it uses less digits than its factorization.

285047872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 285047872 is about 16883.3608028733. The cubic root of 285047872 is about 658.1212810322.

The spelling of 285047872 in words is "two hundred eighty-five million, forty-seven thousand, eight hundred seventy-two".