22240022 has 24 divisors (see below), whose sum is σ = 39015360. Its totient is φ = 9480240.

The previous prime is 22240021. The next prime is 22240027. The reversal of 22240022 is 22004222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22239979 and 22240006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240021) 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 11 ways as a sum of consecutive naturals, for example, 21947 + ... + 22937.

It is an arithmetic number, because the mean of its divisors is an integer number (1625640).

Almost surely, 2^22240022 is an apocalyptic number.

22240022 is a deficient number, since it is larger than the sum of its proper divisors (16775338).

22240022 is a wasteful number, since it uses less digits than its factorization.

22240022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22240022 is about 4715.9327815396. The cubic root of 22240022 is about 281.2192663042.

Adding to 22240022 its reverse (22004222), we get a palindrome (44244244).

The spelling of 22240022 in words is "twenty-two million, two hundred forty thousand, twenty-two".