422322500 has 120 divisors (see below), whose sum is σ = 1031294880. Its totient is φ = 150336000.

The previous prime is 422322491. The next prime is 422322503. The reversal of 422322500 is 5223224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422322503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 807239 + ... + 807761.

It is an arithmetic number, because the mean of its divisors is an integer number (8594124).

Almost surely, 2^422322500 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 422322500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515647440).

422322500 is an abundant number, since it is smaller than the sum of its proper divisors (608972380).

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

422322500 is a wasteful number, since it uses less digits than its factorization.

422322500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 422322500 is about 20550.4866122435. The cubic root of 422322500 is about 750.2650914762.

Adding to 422322500 its reverse (5223224), we get a palindrome (427545724).

The spelling of 422322500 in words is "four hundred twenty-two million, three hundred twenty-two thousand, five hundred".