18214208 has 28 divisors (see below), whose sum is σ = 38272212. Its totient is φ = 8570880.

The previous prime is 18214201. The next prime is 18214219. The reversal of 18214208 is 80241281.

It can be written as a sum of positive squares in 2 ways, for example, as 16386304 + 1827904 = 4048^2 + 1352^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214201) 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, 7283 + ... + 9458.

Almost surely, 2^18214208 is an apocalyptic number.

It is an amenable number.

18214208 is an abundant number, since it is smaller than the sum of its proper divisors (20058004).

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

18214208 is a wasteful number, since it uses less digits than its factorization.

18214208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770 (or 16760 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18214208 is about 4267.8106799623. The cubic root of 18214208 is about 263.1096421508.

Adding to 18214208 its reverse (80241281), we get a palindrome (98455489).

The spelling of 18214208 in words is "eighteen million, two hundred fourteen thousand, two hundred eight".