4222278 has 12 divisors (see below), whose sum is σ = 9148308. Its totient is φ = 1407420.

The previous prime is 4222277. The next prime is 4222289. The reversal of 4222278 is 8722224.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117268 + ... + 117303.

It is an arithmetic number, because the mean of its divisors is an integer number (762359).

Almost surely, 2^4222278 is an apocalyptic number.

4222278 is an abundant number, since it is smaller than the sum of its proper divisors (4926030).

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

4222278 is a wasteful number, since it uses less digits than its factorization.

4222278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234579 (or 234576 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 4222278 is about 2054.8182401371. The cubic root of 4222278 is about 161.6276312504.

The spelling of 4222278 in words is "four million, two hundred twenty-two thousand, two hundred seventy-eight".