422618 has 8 divisors (see below), whose sum is σ = 724512. Its totient is φ = 181116.

The previous prime is 422581. The next prime is 422621. The reversal of 422618 is 816224.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422593 and 422602.

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, 15080 + ... + 15107.

It is an arithmetic number, because the mean of its divisors is an integer number (90564).

2⁴²²⁶¹⁸ is an apocalyptic number.

422618 is a deficient number, since it is larger than the sum of its proper divisors (301894).

422618 is a wasteful number, since it uses less digits than its factorization.

422618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30196.

The product of its digits is 768, while the sum is 23.

The square root of 422618 is about 650.0907628939. The cubic root of 422618 is about 75.0440038068.

It can be divided in two parts, 4 and 22618, that added together give a palindrome (22622).

The spelling of 422618 in words is "four hundred twenty-two thousand, six hundred eighteen".