8218226 has 4 divisors (see below), whose sum is σ = 12327342. Its totient is φ = 4109112.

The previous prime is 8218207. The next prime is 8218229. The reversal of 8218226 is 6228128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5499025 + 2719201 = 2345^2 + 1649^2 .

It is not an unprimeable number, because it can be changed into a prime (8218229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2054555 + ... + 2054558.

Almost surely, 2^8218226 is an apocalyptic number.

8218226 is a deficient number, since it is larger than the sum of its proper divisors (4109116).

8218226 is a wasteful number, since it uses less digits than its factorization.

8218226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109115.

The product of its digits is 3072, while the sum is 29.

The square root of 8218226 is about 2866.7448438952. The cubic root of 8218226 is about 201.8022605021.

The spelling of 8218226 in words is "eight million, two hundred eighteen thousand, two hundred twenty-six".