22772205 has 64 divisors (see below), whose sum is σ = 42900480. Its totient is φ = 11446272.

The previous prime is 22772173. The next prime is 22772209. The reversal of 22772205 is 50227722.

It is a happy number.

It is not a de Polignac number, because 22772205 - 2⁵ = 22772173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22772209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234717 + ... + 234813.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^22772205 is an apocalyptic number.

It is an amenable number.

22772205 is a deficient number, since it is larger than the sum of its proper divisors (20128275).

22772205 is a wasteful number, since it uses less digits than its factorization.

22772205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

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

The square root of 22772205 is about 4772.0231558533. The cubic root of 22772205 is about 283.4447136109. Note that the first 3 decimals are identical.

Adding to 22772205 its reverse (50227722), we get a palindrome (72999927).

The spelling of 22772205 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred five".