422005320 has 192 divisors, whose sum is σ = 1521599040. Its totient is φ = 100569600.

The previous prime is 422005319. The next prime is 422005351. The reversal of 422005320 is 23500224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 422005293 and 422005302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240687 + ... + 242433.

It is an arithmetic number, because the mean of its divisors is an integer number (7924995).

Almost surely, 2^422005320 is an apocalyptic number.

422005320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422005320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760799520).

422005320 is an abundant number, since it is smaller than the sum of its proper divisors (1099593720).

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

422005320 is a wasteful number, since it uses less digits than its factorization.

422005320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 422005320 is about 20542.7680705401. The cubic root of 422005320 is about 750.0772187161.

Adding to 422005320 its reverse (23500224), we get a palindrome (445505544).

The spelling of 422005320 in words is "four hundred twenty-two million, five thousand, three hundred twenty".