223304320 has 64 divisors (see below), whose sum is σ = 535818240. Its totient is φ = 88990720.

The previous prime is 223304273. The next prime is 223304329. The reversal of 223304320 is 23403322.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (223304329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244665 + ... + 245575.

It is an arithmetic number, because the mean of its divisors is an integer number (8372160).

Almost surely, 2^223304320 is an apocalyptic number.

223304320 is a gapful number since it is divisible by the number (20) 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 223304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267909120).

223304320 is an abundant number, since it is smaller than the sum of its proper divisors (312513920).

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

223304320 is an equidigital number, since it uses as much as digits as its factorization.

223304320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 223304320 is about 14943.3704364176. The cubic root of 223304320 is about 606.6884238598.

Adding to 223304320 its reverse (23403322), we get a palindrome (246707642).

The spelling of 223304320 in words is "two hundred twenty-three million, three hundred four thousand, three hundred twenty".