222424416 has 72 divisors (see below), whose sum is σ = 634987080. Its totient is φ = 73852416.

The previous prime is 222424409. The next prime is 222424417. The reversal of 222424416 is 614424222.

222424416 is a `hidden beast` number, since 2 + 2 + 242 + 4 + 416 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 222424416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222424417) 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 11 ways as a sum of consecutive naturals, for example, 80140 + ... + 82868.

It is an arithmetic number, because the mean of its divisors is an integer number (8819265).

Almost surely, 2^222424416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222424416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317493540).

222424416 is an abundant number, since it is smaller than the sum of its proper divisors (412562664).

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

222424416 is a wasteful number, since it uses less digits than its factorization.

222424416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028 (or 3017 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 222424416 is about 14913.9000935369. The cubic root of 222424416 is about 605.8905138281.

Adding to 222424416 its reverse (614424222), we get a palindrome (836848638).

The spelling of 222424416 in words is "two hundred twenty-two million, four hundred twenty-four thousand, four hundred sixteen".