22205224 has 32 divisors (see below), whose sum is σ = 44056800. Its totient is φ = 10463040.

The previous prime is 22205203. The next prime is 22205237. The reversal of 22205224 is 42250222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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, 52534 + ... + 52954.

It is an arithmetic number, because the mean of its divisors is an integer number (1376775).

Almost surely, 2^22205224 is an apocalyptic number.

It is an amenable number.

22205224 is a deficient number, since it is larger than the sum of its proper divisors (21851576).

22205224 is a wasteful number, since it uses less digits than its factorization.

22205224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22205224 is about 4712.2419292732. The cubic root of 22205224 is about 281.0725192025.

Adding to 22205224 its reverse (42250222), we get a palindrome (64455446).

The spelling of 22205224 in words is "twenty-two million, two hundred five thousand, two hundred twenty-four".