18222336 has 108 divisors (see below), whose sum is σ = 57395520. Its totient is φ = 5514240.

The previous prime is 18222331. The next prime is 18222343. The reversal of 18222336 is 63322281.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24985 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (531440).

Almost surely, 2^18222336 is an apocalyptic number.

18222336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18222336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28697760).

18222336 is an abundant number, since it is smaller than the sum of its proper divisors (39173184).

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

18222336 is a wasteful number, since it uses less digits than its factorization.

18222336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 735 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 18222336 is about 4268.7628184288. The cubic root of 18222336 is about 263.1487734551.

The spelling of 18222336 in words is "eighteen million, two hundred twenty-two thousand, three hundred thirty-six".