8122218 has 32 divisors (see below), whose sum is σ = 17684352. Its totient is φ = 2472000.

The previous prime is 8122207. The next prime is 8122237.

8122218 is nontrivially palindromic in base 10.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7363 + ... + 8393.

It is an arithmetic number, because the mean of its divisors is an integer number (552636).

Almost surely, 2^8122218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8122218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8842176).

8122218 is an abundant number, since it is smaller than the sum of its proper divisors (9562134).

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

8122218 is a wasteful number, since it uses less digits than its factorization.

8122218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150.

The product of its digits is 512, while the sum is 24.

The square root of 8122218 is about 2849.9505258864. The cubic root of 8122218 is about 201.0133403685.

The spelling of 8122218 in words is "eight million, one hundred twenty-two thousand, two hundred eighteen".