422318 has 16 divisors (see below), whose sum is σ = 702240. Its totient is φ = 189216.

The previous prime is 422311. The next prime is 422321. The reversal of 422318 is 813224.

422318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 422318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422311) by changing a digit.

422318 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 743 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (43890).

2⁴²²³¹⁸ is an apocalyptic number.

422318 is a deficient number, since it is larger than the sum of its proper divisors (279922).

422318 is a wasteful number, since it uses less digits than its factorization.

422318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its digits is 384, while the sum is 20.

The square root of 422318 is about 649.8599849198. The cubic root of 422318 is about 75.0262426684.

It can be divided in two parts, 4 and 22318, that added together give a palindrome (22322).

The spelling of 422318 in words is "four hundred twenty-two thousand, three hundred eighteen".