422636 has 24 divisors (see below), whose sum is σ = 799680. Its totient is φ = 194832.

The previous prime is 422627. The next prime is 422657. The reversal of 422636 is 636224.

422636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

422636 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, 5051 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (33320).

2⁴²²⁶³⁶ is an apocalyptic number.

It is an amenable number.

422636 is a deficient number, since it is larger than the sum of its proper divisors (377044).

422636 is a wasteful number, since it uses less digits than its factorization.

422636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 171 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 422636 is about 650.1046069672. The cubic root of 422636 is about 75.0450692078.

The spelling of 422636 in words is "four hundred twenty-two thousand, six hundred thirty-six".