422322520 has 64 divisors (see below), whose sum is σ = 979446240. Its totient is φ = 163814400.

The previous prime is 422322503. The next prime is 422322521. The reversal of 422322520 is 25223224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 422322491 and 422322500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422322521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176935 + ... + 179305.

Almost surely, 2^422322520 is an apocalyptic number.

422322520 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 422322520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489723120).

422322520 is an abundant number, since it is smaller than the sum of its proper divisors (557123720).

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

422322520 is a wasteful number, since it uses less digits than its factorization.

422322520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2512 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 422322520 is about 20550.4870988500. The cubic root of 422322520 is about 750.2651033196.

Adding to 422322520 its reverse (25223224), we get a palindrome (447545744).

The spelling of 422322520 in words is "four hundred twenty-two million, three hundred twenty-two thousand, five hundred twenty".