223344440 has 64 divisors (see below), whose sum is σ = 553966560. Its totient is φ = 80363520.

The previous prime is 223344439. The next prime is 223344461. The reversal of 223344440 is 44443322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40064 + ... + 45296.

Almost surely, 2^223344440 is an apocalyptic number.

223344440 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 223344440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276983280).

223344440 is an abundant number, since it is smaller than the sum of its proper divisors (330622120).

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

223344440 is a wasteful number, since it uses less digits than its factorization.

223344440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5348 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 223344440 is about 14944.7127774340. The cubic root of 223344440 is about 606.7247552692.

Adding to 223344440 its reverse (44443322), we get a palindrome (267787762).

The spelling of 223344440 in words is "two hundred twenty-three million, three hundred forty-four thousand, four hundred forty".