8218256 has 10 divisors (see below), whose sum is σ = 15922902. Its totient is φ = 4109120.

The previous prime is 8218253. The next prime is 8218277. The reversal of 8218256 is 6528128.

It can be written as a sum of positive squares in only one way, i.e., 5382400 + 2835856 = 2320^2 + 1684^2 .

It is not an unprimeable number, because it can be changed into a prime (8218253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256805 + ... + 256836.

Almost surely, 2^8218256 is an apocalyptic number.

It is an amenable number.

8218256 is a deficient number, since it is larger than the sum of its proper divisors (7704646).

8218256 is a wasteful number, since it uses less digits than its factorization.

8218256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513649 (or 513643 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 8218256 is about 2866.7500763059. The cubic root of 8218256 is about 201.8025060563.

The spelling of 8218256 in words is "eight million, two hundred eighteen thousand, two hundred fifty-six".