8257222 has 16 divisors (see below), whose sum is σ = 12926592. Its totient is φ = 3951360.

The previous prime is 8257219. The next prime is 8257237. The reversal of 8257222 is 2227528.

It is a d-powerful number, because it can be written as 8³ + 2² + 5⁸ + 7⁸ + 2⁵ + 2¹² + 2²¹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5328 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (807912).

Almost surely, 2^8257222 is an apocalyptic number.

8257222 is a deficient number, since it is larger than the sum of its proper divisors (4669370).

8257222 is a wasteful number, since it uses less digits than its factorization.

8257222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its digits is 4480, while the sum is 28.

The square root of 8257222 is about 2873.5382370868. The cubic root of 8257222 is about 202.1209451184.

The spelling of 8257222 in words is "eight million, two hundred fifty-seven thousand, two hundred twenty-two".