422620422 has 64 divisors (see below), whose sum is σ = 1016409600. Its totient is φ = 114589440.

The previous prime is 422620421. The next prime is 422620447. The reversal of 422620422 is 224026224.

It is a junction number, because it is equal to n+sod(n) for n = 422620392 and 422620401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422620421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68922 + ... + 74802.

It is an arithmetic number, because the mean of its divisors is an integer number (15881400).

Almost surely, 2^422620422 is an apocalyptic number.

422620422 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 422620422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508204800).

422620422 is an abundant number, since it is smaller than the sum of its proper divisors (593789178).

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

422620422 is a wasteful number, since it uses less digits than its factorization.

422620422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 422620422 is about 20557.7338731680. The cubic root of 422620422 is about 750.4414716416.

Adding to 422620422 its reverse (224026224), we get a palindrome (646646646).

The spelling of 422620422 in words is "four hundred twenty-two million, six hundred twenty thousand, four hundred twenty-two".