222443440 has 40 divisors (see below), whose sum is σ = 517801680. Its totient is φ = 88870656.

The previous prime is 222443437. The next prime is 222443443. The reversal of 222443440 is 44344222.

222443440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222443437) and next prime (222443443).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (222443443) 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, 129306 + ... + 131014.

It is an arithmetic number, because the mean of its divisors is an integer number (12945042).

Almost surely, 2^222443440 is an apocalyptic number.

222443440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222443440 is an abundant number, since it is smaller than the sum of its proper divisors (295358240).

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

222443440 is a wasteful number, since it uses less digits than its factorization.

222443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 222443440 is about 14914.5378741683. The cubic root of 222443440 is about 605.9077873103.

Adding to 222443440 its reverse (44344222), we get a palindrome (266787662).

The spelling of 222443440 in words is "two hundred twenty-two million, four hundred forty-three thousand, four hundred forty".