22005263 has 12 divisors (see below), whose sum is σ = 25675992. Its totient is φ = 18804240.

The previous prime is 22005241. The next prime is 22005271. The reversal of 22005263 is 36250022.

It is a happy number.

It is not a de Polignac number, because 22005263 - 2⁶ = 22005199 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 (22004263) 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, 26393 + ... + 27213.

It is an arithmetic number, because the mean of its divisors is an integer number (2139666).

Almost surely, 2^22005263 is an apocalyptic number.

22005263 is a deficient number, since it is larger than the sum of its proper divisors (3670729).

22005263 is an equidigital number, since it uses as much as digits as its factorization.

22005263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22005263 is about 4690.9767639587. The cubic root of 22005263 is about 280.2262754249.

Adding to 22005263 its reverse (36250022), we get a palindrome (58255285).

The spelling of 22005263 in words is "twenty-two million, five thousand, two hundred sixty-three".