520736328 has 144 divisors (see below), whose sum is σ = 1665827280. Its totient is φ = 146494656.

The previous prime is 520736323. The next prime is 520736341. The reversal of 520736328 is 823637025.

520736328 is a `hidden beast` number, since 520 + 73 + 63 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 520736292 and 520736301.

It is not an unprimeable number, because it can be changed into a prime (520736323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 235275 + ... + 237477.

It is an arithmetic number, because the mean of its divisors is an integer number (11568245).

Almost surely, 2^520736328 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 520736328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832913640).

520736328 is an abundant number, since it is smaller than the sum of its proper divisors (1145090952).

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

520736328 is a wasteful number, since it uses less digits than its factorization.

520736328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 520736328 is about 22819.6478500436. The cubic root of 520736328 is about 804.5245333395.

The spelling of 520736328 in words is "five hundred twenty million, seven hundred thirty-six thousand, three hundred twenty-eight".