520204864 has 21 divisors (see below), whose sum is σ = 1032643731. Its totient is φ = 260011200.

The previous prime is 520204807. The next prime is 520204891. The reversal of 520204864 is 468402025.

The square root of 520204864 is 22808.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×520204864² = 541226201058516992, which contains 22 as substring.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 181039 + ... + 183889.

It is an arithmetic number, because the mean of its divisors is an integer number (49173511).

Almost surely, 2^520204864 is an apocalyptic number.

520204864 is the 22808-th square number.

It is an amenable number.

520204864 is a deficient number, since it is larger than the sum of its proper divisors (512438867).

520204864 is an frugal number, since it uses more digits than its factorization.

520204864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5714 (or 2853 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The cubic root of 520204864 is about 804.2507406684.

Adding to 520204864 its reverse (468402025), we get a palindrome (988606889).

The spelling of 520204864 in words is "five hundred twenty million, two hundred four thousand, eight hundred sixty-four".