223321440 has 192 divisors, whose sum is σ = 757693440. Its totient is φ = 55111680.

The previous prime is 223321411. The next prime is 223321457. The reversal of 223321440 is 44123322.

223321440 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428380 + ... + 428900.

It is an arithmetic number, because the mean of its divisors is an integer number (3946320).

Almost surely, 2^223321440 is an apocalyptic number.

223321440 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 223321440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378846720).

223321440 is an abundant number, since it is smaller than the sum of its proper divisors (534372000).

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

223321440 is a wasteful number, since it uses less digits than its factorization.

223321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 223321440 is about 14943.9432547103. The cubic root of 223321440 is about 606.7039277252.

Adding to 223321440 its reverse (44123322), we get a palindrome (267444762).

The spelling of 223321440 in words is "two hundred twenty-three million, three hundred twenty-one thousand, four hundred forty".