22772243 has 12 divisors (see below), whose sum is σ = 24876288. Its totient is φ = 20835360.

The previous prime is 22772237. The next prime is 22772251. The reversal of 22772243 is 34227722.

It is a happy number.

It is not a de Polignac number, because 22772243 - 2⁴ = 22772227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22772213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20933 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (2073024).

Almost surely, 2^22772243 is an apocalyptic number.

22772243 is a deficient number, since it is larger than the sum of its proper divisors (2104045).

22772243 is a wasteful number, since it uses less digits than its factorization.

22772243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1201 counting only the distinct ones).

The product of its digits is 9408, while the sum is 29.

The square root of 22772243 is about 4772.0271373914. The cubic root of 22772243 is about 283.4448712723. Note that the first 3 decimals are identical.

Adding to 22772243 its reverse (34227722), we get a palindrome (56999965).

The spelling of 22772243 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred forty-three".