228444864 has 56 divisors (see below), whose sum is σ = 607057968. Its totient is φ = 75816960.

The previous prime is 228444857. The next prime is 228444869. The reversal of 228444864 is 468444822.

It is a happy number.

228444864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (228444869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43804 + ... + 48740.

Almost surely, 2^228444864 is an apocalyptic number.

228444864 is a gapful number since it is divisible by the number (24) 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 228444864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303528984).

228444864 is an abundant number, since it is smaller than the sum of its proper divisors (378613104).

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

228444864 is a wasteful number, since it uses less digits than its factorization.

228444864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5183 counting only the distinct ones).

The product of its digits is 393216, while the sum is 42.

The square root of 228444864 is about 15114.3926110181. The cubic root of 228444864 is about 611.3085445408.

Subtracting from 228444864 its sum of digits (42), we obtain a palindrome (228444822).

The spelling of 228444864 in words is "two hundred twenty-eight million, four hundred forty-four thousand, eight hundred sixty-four".