22423222 has 16 divisors (see below), whose sum is σ = 34097040. Its totient is φ = 11058912.

The previous prime is 22423217. The next prime is 22423223. The reversal of 22423222 is 22232422.

It is a happy number.

It is a super-2 number, since 2×22423222² = 1005601769722568, 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 22423222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423223) by changing a digit.

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, 79093 + ... + 79375.

It is an arithmetic number, because the mean of its divisors is an integer number (2131065).

Almost surely, 2^22423222 is an apocalyptic number.

22423222 is a deficient number, since it is larger than the sum of its proper divisors (11673818).

22423222 is a wasteful number, since it uses less digits than its factorization.

22423222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its digits is 768, while the sum is 19.

The square root of 22423222 is about 4735.3164624975. The cubic root of 22423222 is about 281.9893277654.

Adding to 22423222 its reverse (22232422), we get a palindrome (44655644).

The spelling of 22423222 in words is "twenty-two million, four hundred twenty-three thousand, two hundred twenty-two".