22163636 has 24 divisors (see below), whose sum is σ = 43680000. Its totient is φ = 9748800.

The previous prime is 22163623. The next prime is 22163639. The reversal of 22163636 is 63636122.

22163636 is a modest number, since divided by 3636 gives 2216 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22163599 and 22163608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22163639) 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, 6761 + ... + 9488.

It is an arithmetic number, because the mean of its divisors is an integer number (1820000).

Almost surely, 2^22163636 is an apocalyptic number.

It is an amenable number.

22163636 is a deficient number, since it is larger than the sum of its proper divisors (21516364).

22163636 is a wasteful number, since it uses less digits than its factorization.

22163636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16295 (or 16293 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 22163636 is about 4707.8270996289. The cubic root of 22163636 is about 280.8969366595.

Adding to 22163636 its reverse (63636122), we get a palindrome (85799758).

It can be divided in two parts, 221 and 63636, that multiplied together give a triangular number (14063556 = T₅₃₀₃).

The spelling of 22163636 in words is "twenty-two million, one hundred sixty-three thousand, six hundred thirty-six".