22720267 has 2 divisors, whose sum is σ = 22720268. Its totient is φ = 22720266.

The previous prime is 22720261. The next prime is 22720277. The reversal of 22720267 is 76202722.

22720267 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22720267 - 2¹¹ = 22718219 is a prime.

It is a super-3 number, since 3×22720267³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22720261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360133 + 11360134.

It is an arithmetic number, because the mean of its divisors is an integer number (11360134).

Almost surely, 2^22720267 is an apocalyptic number.

22720267 is a deficient number, since it is larger than the sum of its proper divisors (1).

22720267 is an equidigital number, since it uses as much as digits as its factorization.

22720267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 22720267 is about 4766.5781227207. The cubic root of 22720267 is about 283.2290595147.

Adding to 22720267 its reverse (76202722), we get a palindrome (98922989).

The spelling of 22720267 in words is "twenty-two million, seven hundred twenty thousand, two hundred sixty-seven".