285219368 has 48 divisors (see below), whose sum is σ = 619090080. Its totient is φ = 120675456.

The previous prime is 285219367. The next prime is 285219373. The reversal of 285219368 is 863912582.

It is not an unprimeable number, because it can be changed into a prime (285219367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443255 + ... + 443897.

It is an arithmetic number, because the mean of its divisors is an integer number (12897710).

Almost surely, 2^285219368 is an apocalyptic number.

285219368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285219368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309545040).

285219368 is an abundant number, since it is smaller than the sum of its proper divisors (333870712).

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

285219368 is an equidigital number, since it uses as much as digits as its factorization.

285219368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 741 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 285219368 is about 16888.4388858177. The cubic root of 285219368 is about 658.2532384461.

The spelling of 285219368 in words is "two hundred eighty-five million, two hundred nineteen thousand, three hundred sixty-eight".