22205727 has 12 divisors (see below), whose sum is σ = 32123520. Its totient is φ = 14781408.

The previous prime is 22205713. The next prime is 22205731. The reversal of 22205727 is 72750222.

It is a happy number.

It is not a de Polignac number, because 22205727 - 2⁶ = 22205663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22205727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205707) 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, 6274 + ... + 9152.

It is an arithmetic number, because the mean of its divisors is an integer number (2676960).

Almost surely, 2^22205727 is an apocalyptic number.

22205727 is a deficient number, since it is larger than the sum of its proper divisors (9917793).

22205727 is a wasteful number, since it uses less digits than its factorization.

22205727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3739 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22205727 is about 4712.2953005940. The cubic root of 22205727 is about 281.0746415021.

Adding to 22205727 its reverse (72750222), we get a palindrome (94955949).

The spelling of 22205727 in words is "twenty-two million, two hundred five thousand, seven hundred twenty-seven".