285359988 has 48 divisors (see below), whose sum is σ = 702656640. Its totient is φ = 89954304.

The previous prime is 285359953. The next prime is 285359989. The reversal of 285359988 is 889953582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285359989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18756 + ... + 30372.

It is an arithmetic number, because the mean of its divisors is an integer number (14638680).

Almost surely, 2^285359988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285359988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351328320).

285359988 is an abundant number, since it is smaller than the sum of its proper divisors (417296652).

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

285359988 is a wasteful number, since it uses less digits than its factorization.

285359988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736 (or 11734 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 57.

The square root of 285359988 is about 16892.6015758379. The cubic root of 285359988 is about 658.3613988925.

The spelling of 285359988 in words is "two hundred eighty-five million, three hundred fifty-nine thousand, nine hundred eighty-eight".