520207620 has 24 divisors (see below), whose sum is σ = 1456581504. Its totient is φ = 138722016.

The previous prime is 520207607. The next prime is 520207627. The reversal of 520207620 is 26702025.

It is not an unprimeable number, because it can be changed into a prime (520207627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4335004 + ... + 4335123.

It is an arithmetic number, because the mean of its divisors is an integer number (60690896).

Almost surely, 2^520207620 is an apocalyptic number.

It is an amenable number.

520207620 is an abundant number, since it is smaller than the sum of its proper divisors (936373884).

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

520207620 is a wasteful number, since it uses less digits than its factorization.

520207620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8670139 (or 8670137 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 520207620 is about 22808.0604173174. The cubic root of 520207620 is about 804.2521609493.

Adding to 520207620 its reverse (26702025), we get a palindrome (546909645).

The spelling of 520207620 in words is "five hundred twenty million, two hundred seven thousand, six hundred twenty".