223440440 has 32 divisors (see below), whose sum is σ = 509112000. Its totient is φ = 88243584.

The previous prime is 223440439. The next prime is 223440443. The reversal of 223440440 is 44044322.

223440440 is digitally balanced in base 2, 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 (223440443) 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, 32195 + ... + 38514.

It is an arithmetic number, because the mean of its divisors is an integer number (15909750).

Almost surely, 2^223440440 is an apocalyptic number.

223440440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223440440 is an abundant number, since it is smaller than the sum of its proper divisors (285671560).

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

223440440 is a wasteful number, since it uses less digits than its factorization.

223440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70799 (or 70795 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 223440440 is about 14947.9242706136. The cubic root of 223440440 is about 606.8116721904.

Adding to 223440440 its reverse (44044322), we get a palindrome (267484762).

The spelling of 223440440 in words is "two hundred twenty-three million, four hundred forty thousand, four hundred forty".