22243424 has 48 divisors (see below), whose sum is σ = 50400000. Its totient is φ = 9465984.

The previous prime is 22243423. The next prime is 22243439. The reversal of 22243424 is 42434222.

It is a super-2 number, since 2×22243424² = 989539822487552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22243424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44327 + ... + 44825.

It is an arithmetic number, because the mean of its divisors is an integer number (1050000).

Almost surely, 2^22243424 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 22243424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25200000).

22243424 is an abundant number, since it is smaller than the sum of its proper divisors (28156576).

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

22243424 is a wasteful number, since it uses less digits than its factorization.

22243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 707 counting only the distinct ones).

The product of its digits is 3072, while the sum is 23.

The square root of 22243424 is about 4716.2934599111. The cubic root of 22243424 is about 281.2336047068.

Adding to 22243424 its reverse (42434222), we get a palindrome (64677646).

The spelling of 22243424 in words is "twenty-two million, two hundred forty-three thousand, four hundred twenty-four".