520224764 has 48 divisors (see below), whose sum is σ = 1001742336. Its totient is φ = 235593600.

The previous prime is 520224721. The next prime is 520224779. The reversal of 520224764 is 467422025.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 520224764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132104 + ... + 135984.

It is an arithmetic number, because the mean of its divisors is an integer number (20869632).

Almost surely, 2^520224764 is an apocalyptic number.

It is an amenable number.

520224764 is a deficient number, since it is larger than the sum of its proper divisors (481517572).

520224764 is a wasteful number, since it uses less digits than its factorization.

520224764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3984 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 520224764 is about 22808.4362462664. The cubic root of 520224764 is about 804.2609958497.

Adding to 520224764 its reverse (467422025), we get a palindrome (987646789).

The spelling of 520224764 in words is "five hundred twenty million, two hundred twenty-four thousand, seven hundred sixty-four".