22772236 has 12 divisors (see below), whose sum is σ = 39920328. Its totient is φ = 11366432.

The previous prime is 22772227. The next prime is 22772237. The reversal of 22772236 is 63227722.

It is a junction number, because it is equal to n+sod(n) for n = 22772198 and 22772207.

It is not an unprimeable number, because it can be changed into a prime (22772237) 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 3 ways as a sum of consecutive naturals, for example, 2146 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (3326694).

Almost surely, 2^22772236 is an apocalyptic number.

It is an amenable number.

22772236 is a deficient number, since it is larger than the sum of its proper divisors (17148092).

22772236 is a wasteful number, since it uses less digits than its factorization.

22772236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848 (or 9846 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 22772236 is about 4772.0264039504. The cubic root of 22772236 is about 283.4448422294. Note that the first 3 decimals are identical.

Adding to 22772236 its reverse (63227722), we get a palindrome (85999958).

The spelling of 22772236 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred thirty-six".