8218218 has 16 divisors (see below), whose sum is σ = 16881120. Its totient is φ = 2665296.

The previous prime is 8218207. The next prime is 8218229. The reversal of 8218218 is 8128128.

It is an interprime number because it is at equal distance from previous prime (8218207) and next prime (8218229).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18288 + ... + 18731.

It is an arithmetic number, because the mean of its divisors is an integer number (1055070).

Almost surely, 2^8218218 is an apocalyptic number.

8218218 is an abundant number, since it is smaller than the sum of its proper divisors (8662902).

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

8218218 is a wasteful number, since it uses less digits than its factorization.

8218218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37061.

The product of its digits is 2048, while the sum is 30.

The square root of 8218218 is about 2866.7434485841. The cubic root of 8218218 is about 201.8021950209.

The spelling of 8218218 in words is "eight million, two hundred eighteen thousand, two hundred eighteen".