222044440 has 16 divisors (see below), whose sum is σ = 499600080. Its totient is φ = 88817760.

The previous prime is 222044423. The next prime is 222044467. The reversal of 222044440 is 44440222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775516 + ... + 2775595.

It is an arithmetic number, because the mean of its divisors is an integer number (31225005).

Almost surely, 2^222044440 is an apocalyptic number.

222044440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222044440 is an abundant number, since it is smaller than the sum of its proper divisors (277555640).

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

222044440 is a wasteful number, since it uses less digits than its factorization.

222044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551122 (or 5551118 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 222044440 is about 14901.1556598809. The cubic root of 222044440 is about 605.5452953151.

Adding to 222044440 its reverse (44440222), we get a palindrome (266484662).

The spelling of 222044440 in words is "two hundred twenty-two million, forty-four thousand, four hundred forty".