22772263 has 4 divisors (see below), whose sum is σ = 22890448. Its totient is φ = 22654080.

The previous prime is 22772257. The next prime is 22772273. The reversal of 22772263 is 36227722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22772263 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 58803 + ... + 59188.

It is an arithmetic number, because the mean of its divisors is an integer number (5722612).

Almost surely, 2^22772263 is an apocalyptic number.

22772263 is a deficient number, since it is larger than the sum of its proper divisors (118185).

22772263 is a wasteful number, since it uses less digits than its factorization.

22772263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118184.

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

The square root of 22772263 is about 4772.0292329364. The cubic root of 22772263 is about 283.4449542519. Note that the first 3 decimals are identical.

Adding to 22772263 its reverse (36227722), we get a palindrome (58999985).

The spelling of 22772263 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred sixty-three".