8218922 has 16 divisors (see below), whose sum is σ = 13302792. Its totient is φ = 3793920.

The previous prime is 8218913. The next prime is 8218961. The reversal of 8218922 is 2298128.

It can be written as a sum of positive squares in 4 ways, for example, as 7845601 + 373321 = 2801^2 + 611^2 .

It is an Ulam number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 4082.

Almost surely, 2^8218922 is an apocalyptic number.

8218922 is a deficient number, since it is larger than the sum of its proper divisors (5083870).

8218922 is a wasteful number, since it uses less digits than its factorization.

8218922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633.

The product of its digits is 4608, while the sum is 32.

The square root of 8218922 is about 2866.8662333635. The cubic root of 8218922 is about 201.8079572063.

The spelling of 8218922 in words is "eight million, two hundred eighteen thousand, nine hundred twenty-two".