520422220 has 12 divisors (see below), whose sum is σ = 1092886704. Its totient is φ = 208168880.

The previous prime is 520422191. The next prime is 520422247. The reversal of 520422220 is 22224025.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13010536 + ... + 13010575.

It is an arithmetic number, because the mean of its divisors is an integer number (91073892).

Almost surely, 2^520422220 is an apocalyptic number.

It is an amenable number.

520422220 is an abundant number, since it is smaller than the sum of its proper divisors (572464484).

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

520422220 is a wasteful number, since it uses less digits than its factorization.

520422220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26021120 (or 26021118 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 520422220 is about 22812.7644094266. The cubic root of 520422220 is about 804.3627378161.

Adding to 520422220 its reverse (22224025), we get a palindrome (542646245).

It can be divided in two parts, 520 and 422220, that added together give a triangular number (422740 = T₉₁₉).

The spelling of 520422220 in words is "five hundred twenty million, four hundred twenty-two thousand, two hundred twenty".