285871712 has 24 divisors (see below), whose sum is σ = 643211856. Its totient is φ = 122516352.

The previous prime is 285871693. The next prime is 285871717. The reversal of 285871712 is 217178582.

It is a self number, because there is not a number n which added to its sum of digits gives 285871712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285871717) 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, 637883 + ... + 638330.

It is an arithmetic number, because the mean of its divisors is an integer number (26800494).

Almost surely, 2^285871712 is an apocalyptic number.

It is an amenable number.

285871712 is an abundant number, since it is smaller than the sum of its proper divisors (357340144).

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

285871712 is a wasteful number, since it uses less digits than its factorization.

285871712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276230 (or 1276222 counting only the distinct ones).

The product of its digits is 62720, while the sum is 41.

The square root of 285871712 is about 16907.7411856226. The cubic root of 285871712 is about 658.7547011080.

The spelling of 285871712 in words is "two hundred eighty-five million, eight hundred seventy-one thousand, seven hundred twelve".