520089728 has 32 divisors (see below), whose sum is σ = 1069547520. Its totient is φ = 251654400.

The previous prime is 520089707. The next prime is 520089749. The reversal of 520089728 is 827980025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520089707) and next prime (520089749).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×520089728² = 540986650342227968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61568 + ... + 69503.

It is an arithmetic number, because the mean of its divisors is an integer number (33423360).

Almost surely, 2^520089728 is an apocalyptic number.

It is an amenable number.

520089728 is an abundant number, since it is smaller than the sum of its proper divisors (549457792).

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

520089728 is a wasteful number, since it uses less digits than its factorization.

520089728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131116 (or 131104 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 520089728 is about 22805.4758336677. The cubic root of 520089728 is about 804.1914018373.

The spelling of 520089728 in words is "five hundred twenty million, eighty-nine thousand, seven hundred twenty-eight".