520331872 has 48 divisors (see below), whose sum is σ = 1083242160. Its totient is φ = 245348352.

The previous prime is 520331857. The next prime is 520331873. The reversal of 520331872 is 278133025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520331873) 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, 139828 + ... + 143500.

It is an arithmetic number, because the mean of its divisors is an integer number (22567545).

Almost surely, 2^520331872 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 520331872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541621080).

520331872 is an abundant number, since it is smaller than the sum of its proper divisors (562910288).

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

520331872 is a wasteful number, since it uses less digits than its factorization.

520331872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 520331872 is about 22810.7841162903. The cubic root of 520331872 is about 804.3161879394.

Adding to 520331872 its reverse (278133025), we get a palindrome (798464897).

The spelling of 520331872 in words is "five hundred twenty million, three hundred thirty-one thousand, eight hundred seventy-two".