8218116 has 18 divisors (see below), whose sum is σ = 20773662. Its totient is φ = 2739360.

The previous prime is 8218109. The next prime is 8218139. The reversal of 8218116 is 6118128.

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 1988100 = 2496^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 8218116.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 114105 + ... + 114176.

Almost surely, 2^8218116 is an apocalyptic number.

It is an amenable number.

8218116 is an abundant number, since it is smaller than the sum of its proper divisors (12555546).

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

8218116 is a wasteful number, since it uses less digits than its factorization.

8218116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228291 (or 228286 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 8218116 is about 2866.7256583077. The cubic root of 8218116 is about 201.8013601315.

The spelling of 8218116 in words is "eight million, two hundred eighteen thousand, one hundred sixteen".