520716330 has 64 divisors (see below), whose sum is σ = 1394046720. Its totient is φ = 138310848.

The previous prime is 520716293. The next prime is 520716347. The reversal of 520716330 is 33617025.

It is a happy number.

520716330 is a `hidden beast` number, since 5 + 20 + 7 + 1 + 633 + 0 = 666.

It is a super-2 number, since 2×520716330² = 542290992657337800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520716294 and 520716303.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 67344 + ... + 74676.

It is an arithmetic number, because the mean of its divisors is an integer number (21781980).

Almost surely, 2^520716330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520716330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697023360).

520716330 is an abundant number, since it is smaller than the sum of its proper divisors (873330390).

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

520716330 is a wasteful number, since it uses less digits than its factorization.

520716330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612 (or 7606 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 520716330 is about 22819.2096708015. The cubic root of 520716330 is about 804.5142344053.

The spelling of 520716330 in words is "five hundred twenty million, seven hundred sixteen thousand, three hundred thirty".