8219218 has 8 divisors (see below), whose sum is σ = 14090112. Its totient is φ = 3522516.

The previous prime is 8219213. The next prime is 8219221. The reversal of 8219218 is 8129128.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8219218.

It is not an unprimeable number, because it can be changed into a prime (8219213) 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, 293530 + ... + 293557.

It is an arithmetic number, because the mean of its divisors is an integer number (1761264).

Almost surely, 2^8219218 is an apocalyptic number.

8219218 is a deficient number, since it is larger than the sum of its proper divisors (5870894).

8219218 is a wasteful number, since it uses less digits than its factorization.

8219218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587096.

The product of its digits is 2304, while the sum is 31.

The square root of 8219218 is about 2866.9178572118. The cubic root of 8219218 is about 201.8103798451.

The spelling of 8219218 in words is "eight million, two hundred nineteen thousand, two hundred eighteen".