222544140 has 96 divisors (see below), whose sum is σ = 766940160. Its totient is φ = 46953216.

The previous prime is 222544129. The next prime is 222544141. The reversal of 222544140 is 41445222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222544140.

It is not an unprimeable number, because it can be changed into a prime (222544141) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14920 + ... + 25839.

It is an arithmetic number, because the mean of its divisors is an integer number (7988960).

Almost surely, 2^222544140 is an apocalyptic number.

222544140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222544140 is an abundant number, since it is smaller than the sum of its proper divisors (544396020).

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

222544140 is a wasteful number, since it uses less digits than its factorization.

222544140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40791 (or 40789 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 222544140 is about 14917.9133929648. The cubic root of 222544140 is about 605.9992048699. Note that the first 3 decimals are identical.

Adding to 222544140 its reverse (41445222), we get a palindrome (263989362).

The spelling of 222544140 in words is "two hundred twenty-two million, five hundred forty-four thousand, one hundred forty".