285999768 has 64 divisors (see below), whose sum is σ = 797004000. Its totient is φ = 95026176.

The previous prime is 285999743. The next prime is 285999787. The reversal of 285999768 is 867999582.

285999768 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70828 + ... + 74756.

Almost surely, 2^285999768 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 285999768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398502000).

285999768 is an abundant number, since it is smaller than the sum of its proper divisors (511004232).

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

285999768 is a wasteful number, since it uses less digits than its factorization.

285999768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281 (or 4271 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The square root of 285999768 is about 16911.5276660626. The cubic root of 285999768 is about 658.8530493013.

The spelling of 285999768 in words is "two hundred eighty-five million, nine hundred ninety-nine thousand, seven hundred sixty-eight".