18022112 has 24 divisors (see below), whose sum is σ = 35935200. Its totient is φ = 8895744.

The previous prime is 18022111. The next prime is 18022141. The reversal of 18022112 is 21122081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18022111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037 + ... + 6092.

It is an arithmetic number, because the mean of its divisors is an integer number (1497300).

Almost surely, 2^18022112 is an apocalyptic number.

It is an amenable number.

18022112 is a deficient number, since it is larger than the sum of its proper divisors (17913088).

18022112 is an equidigital number, since it uses as much as digits as its factorization.

18022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7218 (or 7210 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 18022112 is about 4245.2458114931. The cubic root of 18022112 is about 262.1814100144.

Adding to 18022112 its reverse (21122081), we get a palindrome (39144193).

The spelling of 18022112 in words is "eighteen million, twenty-two thousand, one hundred twelve".