18228382 has 8 divisors (see below), whose sum is σ = 27393336. Its totient is φ = 9097272.

The previous prime is 18228367. The next prime is 18228389. The reversal of 18228382 is 28382281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228389) by changing a digit.

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, 7068 + ... + 9295.

It is an arithmetic number, because the mean of its divisors is an integer number (3424167).

Almost surely, 2^18228382 is an apocalyptic number.

18228382 is a deficient number, since it is larger than the sum of its proper divisors (9164954).

18228382 is a wasteful number, since it uses less digits than its factorization.

18228382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16922.

The product of its digits is 12288, while the sum is 34.

The square root of 18228382 is about 4269.4709274101. The cubic root of 18228382 is about 263.1778736677.

The spelling of 18228382 in words is "eighteen million, two hundred twenty-eight thousand, three hundred eighty-two".