8147222 has 8 divisors (see below), whose sum is σ = 12235296. Its totient is φ = 4068792.

The previous prime is 8147189. The next prime is 8147261. The reversal of 8147222 is 2227418.

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

It is a junction number, because it is equal to n+sod(n) for n = 8147191 and 8147200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (1529412).

Almost surely, 2^8147222 is an apocalyptic number.

8147222 is a deficient number, since it is larger than the sum of its proper divisors (4088074).

8147222 is a wasteful number, since it uses less digits than its factorization.

8147222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822.

The product of its digits is 1792, while the sum is 26.

The square root of 8147222 is about 2854.3338977772. Note that the first 3 decimals coincide. The cubic root of 8147222 is about 201.2194002059.

The spelling of 8147222 in words is "eight million, one hundred forty-seven thousand, two hundred twenty-two".