520002256 has 40 divisors (see below), whose sum is σ = 1077821640. Its totient is φ = 242171904.

The previous prime is 520002251. The next prime is 520002283. The reversal of 520002256 is 652200025.

It can be written as a sum of positive squares in 4 ways, for example, as 128595600 + 391406656 = 11340^2 + 19784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520002251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16530 + ... + 36238.

It is an arithmetic number, because the mean of its divisors is an integer number (26945541).

Almost surely, 2^520002256 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 520002256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538910820).

520002256 is an abundant number, since it is smaller than the sum of its proper divisors (557819384).

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

520002256 is a wasteful number, since it uses less digits than its factorization.

520002256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19831 (or 19825 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520002256 is about 22803.5579680014. The cubic root of 520002256 is about 804.1463146337.

The spelling of 520002256 in words is "five hundred twenty million, two thousand, two hundred fifty-six".