520652720 has 40 divisors (see below), whose sum is σ = 1383450144. Its totient is φ = 178509312.

The previous prime is 520652707. The next prime is 520652723. The reversal of 520652720 is 27256025.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (520652723) 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, 464309 + ... + 465428.

Almost surely, 2^520652720 is an apocalyptic number.

It is an amenable number.

520652720 is an abundant number, since it is smaller than the sum of its proper divisors (862797424).

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

520652720 is a wasteful number, since it uses less digits than its factorization.

520652720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929757 (or 929751 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 520652720 is about 22817.8158463951. The cubic root of 520652720 is about 804.4814736156.

The spelling of 520652720 in words is "five hundred twenty million, six hundred fifty-two thousand, seven hundred twenty".