22163236 has 12 divisors (see below), whose sum is σ = 38848012. Its totient is φ = 11063808.

The previous prime is 22163201. The next prime is 22163261. The reversal of 22163236 is 63236122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5712100 + 16451136 = 2390^2 + 4056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22163236.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425 + ... + 6808.

Almost surely, 2^22163236 is an apocalyptic number.

It is an amenable number.

22163236 is a deficient number, since it is larger than the sum of its proper divisors (16684776).

22163236 is a wasteful number, since it uses less digits than its factorization.

22163236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8910 (or 8908 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 22163236 is about 4707.7846169934. The cubic root of 22163236 is about 280.8952468126.

Adding to 22163236 its reverse (63236122), we get a palindrome (85399358).

The spelling of 22163236 in words is "twenty-two million, one hundred sixty-three thousand, two hundred thirty-six".