8218856 has 8 divisors (see below), whose sum is σ = 15410370. Its totient is φ = 4109424.

The previous prime is 8218853. The next prime is 8218897. The reversal of 8218856 is 6588128.

It can be written as a sum of positive squares in only one way, i.e., 8213956 + 4900 = 2866^2 + 70^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (8218853) 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 as a sum of consecutive naturals, namely, 513671 + ... + 513686.

Almost surely, 2^8218856 is an apocalyptic number.

It is an amenable number.

8218856 is a deficient number, since it is larger than the sum of its proper divisors (7191514).

8218856 is a wasteful number, since it uses less digits than its factorization.

8218856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027363 (or 1027359 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 8218856 is about 2866.8547225139. The cubic root of 8218856 is about 201.8074170154.

The spelling of 8218856 in words is "eight million, two hundred eighteen thousand, eight hundred fifty-six".