22770222 has 16 divisors (see below), whose sum is σ = 45874512. Its totient is φ = 7534400.

The previous prime is 22770203. The next prime is 22770229. The reversal of 22770222 is 22207722.

It is a junction number, because it is equal to n+sod(n) for n = 22770192 and 22770201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13029 + ... + 14672.

It is an arithmetic number, because the mean of its divisors is an integer number (2867157).

Almost surely, 2^22770222 is an apocalyptic number.

22770222 is an abundant number, since it is smaller than the sum of its proper divisors (23104290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22770222 is a wasteful number, since it uses less digits than its factorization.

22770222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27843.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 22770222 is about 4771.8153778201. The cubic root of 22770222 is about 283.4364859318.

Adding to 22770222 its reverse (22207722), we get a palindrome (44977944).

Subtracting from 22770222 its reverse (22207722), we obtain a square (562500 = 750²).

The spelling of 22770222 in words is "twenty-two million, seven hundred seventy thousand, two hundred twenty-two".