22772242 has 8 divisors (see below), whose sum is σ = 35081676. Its totient is φ = 11078352.

The previous prime is 22772237. The next prime is 22772251. The reversal of 22772242 is 24227722.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 9801 = 4771^2 + 99^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22772242.

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, 153793 + ... + 153940.

Almost surely, 2^22772242 is an apocalyptic number.

22772242 is a deficient number, since it is larger than the sum of its proper divisors (12309434).

22772242 is a wasteful number, since it uses less digits than its factorization.

22772242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307772.

The product of its digits is 6272, while the sum is 28.

The square root of 22772242 is about 4772.0270326141. The cubic root of 22772242 is about 283.4448671233. Note that the first 3 decimals are identical.

Adding to 22772242 its reverse (24227722), we get a palindrome (46999964).

The spelling of 22772242 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred forty-two".