520703316 has 144 divisors (see below), whose sum is σ = 1577232384. Its totient is φ = 147129696.

The previous prime is 520703231. The next prime is 520703327. The reversal of 520703316 is 613307025.

It is a happy number.

It is a super-2 number, since 2×520703316² = 542263886586791712, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 520703316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 700441 + ... + 701183.

Almost surely, 2^520703316 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 520703316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788616192).

520703316 is an abundant number, since it is smaller than the sum of its proper divisors (1056529068).

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

520703316 is a wasteful number, since it uses less digits than its factorization.

520703316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 858 counting only the distinct ones).

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

The square root of 520703316 is about 22818.9245145340. The cubic root of 520703316 is about 804.5075320769.

The spelling of 520703316 in words is "five hundred twenty million, seven hundred three thousand, three hundred sixteen".