8422278 has 16 divisors (see below), whose sum is σ = 17577216. Its totient is φ = 2685320.

The previous prime is 8422247. The next prime is 8422279. The reversal of 8422278 is 8722248.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8422279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30378 + ... + 30653.

It is an arithmetic number, because the mean of its divisors is an integer number (1098576).

Almost surely, 2^8422278 is an apocalyptic number.

8422278 is an abundant number, since it is smaller than the sum of its proper divisors (9154938).

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

8422278 is a wasteful number, since it uses less digits than its factorization.

8422278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61059.

The product of its digits is 14336, while the sum is 33.

The square root of 8422278 is about 2902.1161244857. The cubic root of 8422278 is about 203.4588212816.

The spelling of 8422278 in words is "eight million, four hundred twenty-two thousand, two hundred seventy-eight".