22223472 has 40 divisors (see below), whose sum is σ = 57960576. Its totient is φ = 7336896.

The previous prime is 22223429. The next prime is 22223473. The reversal of 22223472 is 27432222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223473) 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 7 ways as a sum of consecutive naturals, for example, 2973 + ... + 7299.

Almost surely, 2^22223472 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 22223472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28980288).

22223472 is an abundant number, since it is smaller than the sum of its proper divisors (35737104).

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

22223472 is a wasteful number, since it uses less digits than its factorization.

22223472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 4439 counting only the distinct ones).

The product of its digits is 2688, while the sum is 24.

The square root of 22223472 is about 4714.1777649978. The cubic root of 22223472 is about 281.1494921855.

Adding to 22223472 its reverse (27432222), we get a palindrome (49655694).

The spelling of 22223472 in words is "twenty-two million, two hundred twenty-three thousand, four hundred seventy-two".