22223724 has 24 divisors (see below), whose sum is σ = 51939888. Its totient is φ = 7395840.

The previous prime is 22223693. The next prime is 22223741. The reversal of 22223724 is 42732222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22223694 and 22223703.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9204 + ... + 11364.

It is an arithmetic number, because the mean of its divisors is an integer number (2164162).

Almost surely, 2^22223724 is an apocalyptic number.

It is an amenable number.

22223724 is an abundant number, since it is smaller than the sum of its proper divisors (29716164).

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

22223724 is a wasteful number, since it uses less digits than its factorization.

22223724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 3023 counting only the distinct ones).

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

The square root of 22223724 is about 4714.2044928068. The cubic root of 22223724 is about 281.1505548668.

Adding to 22223724 its reverse (42732222), we get a palindrome (64955946).

It can be divided in two parts, 2222 and 3724, that multiplied together give a palindrome (8274728).

The spelling of 22223724 in words is "twenty-two million, two hundred twenty-three thousand, seven hundred twenty-four".