285268816 has 160 divisors (see below), whose sum is σ = 702955008. Its totient is φ = 109486080.

The previous prime is 285268801. The next prime is 285268817. The reversal of 285268816 is 618862582.

285268816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285268817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3907756 + ... + 3907828.

Almost surely, 2^285268816 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 285268816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351477504).

285268816 is an abundant number, since it is smaller than the sum of its proper divisors (417686192).

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

285268816 is a wasteful number, since it uses less digits than its factorization.

285268816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 183 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The square root of 285268816 is about 16889.9027824319. The cubic root of 285268816 is about 658.2912763320.

The spelling of 285268816 in words is "two hundred eighty-five million, two hundred sixty-eight thousand, eight hundred sixteen".