22163156 has 6 divisors (see below), whose sum is σ = 38785530. Its totient is φ = 11081576.

The previous prime is 22163149. The next prime is 22163159. The reversal of 22163156 is 65136122.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 1768900 = 4516^2 + 1330^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22163159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770391 + ... + 2770398.

It is an arithmetic number, because the mean of its divisors is an integer number (6464255).

Almost surely, 2^22163156 is an apocalyptic number.

It is an amenable number.

22163156 is a deficient number, since it is larger than the sum of its proper divisors (16622374).

22163156 is a wasteful number, since it uses less digits than its factorization.

22163156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540793 (or 5540791 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 22163156 is about 4707.7761204203. The cubic root of 22163156 is about 280.8949088408.

Adding to 22163156 its reverse (65136122), we get a palindrome (87299278).

The spelling of 22163156 in words is "twenty-two million, one hundred sixty-three thousand, one hundred fifty-six".