520222230 has 128 divisors (see below), whose sum is σ = 1528450560. Its totient is φ = 124859520.

The previous prime is 520222207. The next prime is 520222231. The reversal of 520222230 is 32222025.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520222231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 316972 + ... + 318608.

It is an arithmetic number, because the mean of its divisors is an integer number (11941020).

Almost surely, 2^520222230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764225280).

520222230 is an abundant number, since it is smaller than the sum of its proper divisors (1008228330).

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

520222230 is a wasteful number, since it uses less digits than its factorization.

520222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1765 counting only the distinct ones).

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

The square root of 520222230 is about 22808.3806965773. The cubic root of 520222230 is about 804.2596900035.

Adding to 520222230 its reverse (32222025), we get a palindrome (552444255).

The spelling of 520222230 in words is "five hundred twenty million, two hundred twenty-two thousand, two hundred thirty".