22204445 has 16 divisors (see below), whose sum is σ = 28650240. Its totient is φ = 16467264.

The previous prime is 22204439. The next prime is 22204447. The reversal of 22204445 is 54440222.

It is a cyclic number.

It is not a de Polignac number, because 22204445 - 2⁶ = 22204381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22204445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204447) 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 15 ways as a sum of consecutive naturals, for example, 1979 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (1790640).

Almost surely, 2^22204445 is an apocalyptic number.

It is an amenable number.

22204445 is a deficient number, since it is larger than the sum of its proper divisors (6445795).

22204445 is a wasteful number, since it uses less digits than its factorization.

22204445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 22204445 is about 4712.1592715018. The cubic root of 22204445 is about 281.0692323175.

Adding to 22204445 its reverse (54440222), we get a palindrome (76644667).

The spelling of 22204445 in words is "twenty-two million, two hundred four thousand, four hundred forty-five".