22272556 has 12 divisors (see below), whose sum is σ = 40671792. Its totient is φ = 10652048.

The previous prime is 22272521. The next prime is 22272577. The reversal of 22272556 is 65527222.

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 3 ways as a sum of consecutive naturals, for example, 120955 + ... + 121138.

It is an arithmetic number, because the mean of its divisors is an integer number (3389316).

Almost surely, 2^22272556 is an apocalyptic number.

It is an amenable number.

22272556 is a deficient number, since it is larger than the sum of its proper divisors (18399236).

22272556 is a wasteful number, since it uses less digits than its factorization.

22272556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242120 (or 242118 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 22272556 is about 4719.3808916001. The cubic root of 22272556 is about 281.3563274683.

Adding to 22272556 its reverse (65527222), we get a palindrome (87799778).

The spelling of 22272556 in words is "twenty-two million, two hundred seventy-two thousand, five hundred fifty-six".