8218816 has 28 divisors (see below), whose sum is σ = 16623792. Its totient is φ = 4030208.

The previous prime is 8218801. The next prime is 8218817. The reversal of 8218816 is 6188128.

8218816 = T₄₉ + T₅₀ + ... + T₃₆₆.

It is not an unprimeable number, because it can be changed into a prime (8218817) 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, 2181 + ... + 4603.

Almost surely, 2^8218816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8218816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8311896).

8218816 is an abundant number, since it is smaller than the sum of its proper divisors (8404976).

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

8218816 is a wasteful number, since it uses less digits than its factorization.

8218816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488 (or 2478 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 8218816 is about 2866.8477462188. The cubic root of 8218816 is about 201.8070896256.

The spelling of 8218816 in words is "eight million, two hundred eighteen thousand, eight hundred sixteen".