285715900 has 18 divisors (see below), whose sum is σ = 620003720. Its totient is φ = 114286320.

The previous prime is 285715897. The next prime is 285715907. The reversal of 285715900 is 9517582.

It is a self number, because there is not a number n which added to its sum of digits gives 285715900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285715907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428480 + ... + 1428679.

Almost surely, 2^285715900 is an apocalyptic number.

285715900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285715900 is an abundant number, since it is smaller than the sum of its proper divisors (334287820).

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

285715900 is a wasteful number, since it uses less digits than its factorization.

285715900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857173 (or 2857166 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 285715900 is about 16903.1328457183. The cubic root of 285715900 is about 658.6349964329.

The spelling of 285715900 in words is "two hundred eighty-five million, seven hundred fifteen thousand, nine hundred".