422646 has 32 divisors (see below), whose sum is σ = 1002240. Its totient is φ = 116256.

The previous prime is 422627. The next prime is 422657. The reversal of 422646 is 646224.

422646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (31320).

2⁴²²⁶⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501120).

422646 is an abundant number, since it is smaller than the sum of its proper divisors (579594).

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

422646 is a wasteful number, since it uses less digits than its factorization.

422646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388.

The product of its digits is 2304, while the sum is 24.

The square root of 422646 is about 650.1122979917. The cubic root of 422646 is about 75.0456610841.

The spelling of 422646 in words is "four hundred twenty-two thousand, six hundred forty-six".