423328422 has 48 divisors (see below), whose sum is σ = 946491840. Its totient is φ = 126094320.

The previous prime is 423328393. The next prime is 423328427. The reversal of 423328422 is 224823324.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 423328422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423328427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37893 + ... + 47775.

It is an arithmetic number, because the mean of its divisors is an integer number (19718580).

Almost surely, 2^423328422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423328422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473245920).

423328422 is an abundant number, since it is smaller than the sum of its proper divisors (523163418).

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

423328422 is a wasteful number, since it uses less digits than its factorization.

423328422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9969 (or 9958 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 423328422 is about 20574.9464640859. The cubic root of 423328422 is about 750.8602999125.

The spelling of 423328422 in words is "four hundred twenty-three million, three hundred twenty-eight thousand, four hundred twenty-two".