285872856 has 16 divisors (see below), whose sum is σ = 714682200. Its totient is φ = 95290944.

The previous prime is 285872737. The next prime is 285872857. The reversal of 285872856 is 658278582.

It is a junction number, because it is equal to n+sod(n) for n = 285872799 and 285872808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285872857) 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, 5955661 + ... + 5955708.

Almost surely, 2^285872856 is an apocalyptic number.

It is an amenable number.

285872856 is an abundant number, since it is smaller than the sum of its proper divisors (428809344).

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

285872856 is a wasteful number, since it uses less digits than its factorization.

285872856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911378 (or 11911374 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The square root of 285872856 is about 16907.7750162462. The cubic root of 285872856 is about 658.7555798406.

The spelling of 285872856 in words is "two hundred eighty-five million, eight hundred seventy-two thousand, eight hundred fifty-six".