284747868 has 72 divisors (see below), whose sum is σ = 747845280. Its totient is φ = 91244160.

The previous prime is 284747867. The next prime is 284747887. The reversal of 284747868 is 868747482.

It is a happy number.

284747868 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 not an unprimeable number, because it can be changed into a prime (284747867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324246 + ... + 325122.

It is an arithmetic number, because the mean of its divisors is an integer number (10386740).

Almost surely, 2^284747868 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 284747868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373922640).

284747868 is an abundant number, since it is smaller than the sum of its proper divisors (463097412).

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

284747868 is a wasteful number, since it uses less digits than its factorization.

284747868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1222 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The square root of 284747868 is about 16874.4738584644. The cubic root of 284747868 is about 657.8903159408.

The spelling of 284747868 in words is "two hundred eighty-four million, seven hundred forty-seven thousand, eight hundred sixty-eight".