8178222 has 16 divisors (see below), whose sum is σ = 17614800. Its totient is φ = 2516352.

The previous prime is 8178217. The next prime is 8178251. The reversal of 8178222 is 2228718.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8178222.

It is a congruent 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, 52347 + ... + 52502.

It is an arithmetic number, because the mean of its divisors is an integer number (1100925).

Almost surely, 2^8178222 is an apocalyptic number.

8178222 is an abundant number, since it is smaller than the sum of its proper divisors (9436578).

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

8178222 is a wasteful number, since it uses less digits than its factorization.

8178222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104867.

The product of its digits is 3584, while the sum is 30.

The square root of 8178222 is about 2859.7590807619. The cubic root of 8178222 is about 201.4742889898.

The spelling of 8178222 in words is "eight million, one hundred seventy-eight thousand, two hundred twenty-two".