8222638 has 8 divisors (see below), whose sum is σ = 12870288. Its totient is φ = 3932544.

The previous prime is 8222623. The next prime is 8222681. The reversal of 8222638 is 8362228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8222638² = 135223551358088, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 89331 + ... + 89422.

It is an arithmetic number, because the mean of its divisors is an integer number (1608786).

Almost surely, 2^8222638 is an apocalyptic number.

8222638 is a deficient number, since it is larger than the sum of its proper divisors (4647650).

8222638 is a wasteful number, since it uses less digits than its factorization.

8222638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178778.

The product of its digits is 9216, while the sum is 31.

The square root of 8222638 is about 2867.5142545417. The cubic root of 8222638 is about 201.8383669274.

The spelling of 8222638 in words is "eight million, two hundred twenty-two thousand, six hundred thirty-eight".