285055864 has 32 divisors (see below), whose sum is σ = 572760720. Its totient is φ = 132522496.

The previous prime is 285055861. The next prime is 285055909. The reversal of 285055864 is 468550582.

It is a self number, because there is not a number n which added to its sum of digits gives 285055864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285055861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339 + ... + 23914.

Almost surely, 2^285055864 is an apocalyptic number.

It is an amenable number.

285055864 is an abundant number, since it is smaller than the sum of its proper divisors (287704856).

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

285055864 is a wasteful number, since it uses less digits than its factorization.

285055864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25359 (or 25355 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 43.

The square root of 285055864 is about 16883.5974839487. The cubic root of 285055864 is about 658.1274316437.

The spelling of 285055864 in words is "two hundred eighty-five million, fifty-five thousand, eight hundred sixty-four".