22216447 has 12 divisors (see below), whose sum is σ = 24706080. Its totient is φ = 19960160.

The previous prime is 22216417. The next prime is 22216451. The reversal of 22216447 is 74461222.

It is a happy number.

It is not a de Polignac number, because 22216447 - 2¹¹ = 22214399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22216417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9738 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (2058840).

Almost surely, 2^22216447 is an apocalyptic number.

22216447 is a deficient number, since it is larger than the sum of its proper divisors (2489633).

22216447 is a wasteful number, since it uses less digits than its factorization.

22216447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2163 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 22216447 is about 4713.4326132873. The cubic root of 22216447 is about 281.1198646017.

Adding to 22216447 its reverse (74461222), we get a palindrome (96677669).

It can be divided in two parts, 2221 and 6447, that added together give a palindrome (8668).

The spelling of 22216447 in words is "twenty-two million, two hundred sixteen thousand, four hundred forty-seven".