18382222 has 8 divisors (see below), whose sum is σ = 27718272. Its totient is φ = 9142800.

The previous prime is 18382213. The next prime is 18382223. The reversal of 18382222 is 22228381.

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

18382222 is a modest number, since divided by 2222 gives 1838 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382223) 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, 23679 + ... + 24442.

It is an arithmetic number, because the mean of its divisors is an integer number (3464784).

Almost surely, 2^18382222 is an apocalyptic number.

18382222 is a deficient number, since it is larger than the sum of its proper divisors (9336050).

18382222 is a wasteful number, since it uses less digits than its factorization.

18382222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48314.

The product of its digits is 3072, while the sum is 28.

The square root of 18382222 is about 4287.4493583015. The cubic root of 18382222 is about 263.9161713490.

It can be divided in two parts, 18382 and 222, that multiplied together give a palindrome (4080804).

The spelling of 18382222 in words is "eighteen million, three hundred eighty-two thousand, two hundred twenty-two".