522022320 has 140 divisors (see below), whose sum is σ = 1819923696. Its totient is φ = 139190400.

The previous prime is 522022313. The next prime is 522022367. The reversal of 522022320 is 23220225.

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 = 522022293 and 522022302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 53845 + ... + 62795.

Almost surely, 2^522022320 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 522022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909961848).

522022320 is an abundant number, since it is smaller than the sum of its proper divisors (1297901376).

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

522022320 is an equidigital number, since it uses as much as digits as its factorization.

522022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8982 (or 8961 counting only the distinct ones).

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

The square root of 522022320 is about 22847.8077723006. The cubic root of 522022320 is about 805.1862640108.

Adding to 522022320 its reverse (23220225), we get a palindrome (545242545).

The spelling of 522022320 in words is "five hundred twenty-two million, twenty-two thousand, three hundred twenty".