422563220 has 48 divisors (see below), whose sum is σ = 962530128. Its totient is φ = 155197440.

The previous prime is 422563217. The next prime is 422563241. The reversal of 422563220 is 22365224.

It can be written as a sum of positive squares in 8 ways, for example, as 425104 + 422138116 = 652^2 + 20546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 422563220.

It is a congruent number.

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, 1217 + ... + 29096.

It is an arithmetic number, because the mean of its divisors is an integer number (20052711).

Almost surely, 2^422563220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422563220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481265064).

422563220 is an abundant number, since it is smaller than the sum of its proper divisors (539966908).

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

422563220 is a wasteful number, since it uses less digits than its factorization.

422563220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30380 (or 30378 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 422563220 is about 20556.3425735222. The cubic root of 422563220 is about 750.4076125033.

The spelling of 422563220 in words is "four hundred twenty-two million, five hundred sixty-three thousand, two hundred twenty".