22444320 has 192 divisors, whose sum is σ = 78382080. Its totient is φ = 5372928.

The previous prime is 22444319. The next prime is 22444327. The reversal of 22444320 is 2344422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444327) 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, 209707 + ... + 209813.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^22444320 is an apocalyptic number.

22444320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22444320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39191040).

22444320 is an abundant number, since it is smaller than the sum of its proper divisors (55937760).

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

22444320 is a wasteful number, since it uses less digits than its factorization.

22444320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22444320 is about 4737.5436673449. The cubic root of 22444320 is about 282.0777412545.

Adding to 22444320 its reverse (2344422), we get a palindrome (24788742).

It can be divided in two parts, 224 and 44320, that added together give a palindrome (44544).

The spelling of 22444320 in words is "twenty-two million, four hundred forty-four thousand, three hundred twenty".