520309344 has 48 divisors (see below), whose sum is σ = 1446158448. Its totient is φ = 163233792.

The previous prime is 520309333. The next prime is 520309351. The reversal of 520309344 is 443903025.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157777 + ... + 161040.

It is an arithmetic number, because the mean of its divisors is an integer number (30128301).

Almost surely, 2^520309344 is an apocalyptic number.

It is an amenable number.

520309344 is an abundant number, since it is smaller than the sum of its proper divisors (925849104).

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

520309344 is a wasteful number, since it uses less digits than its factorization.

520309344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318847 (or 318839 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 520309344 is about 22810.2903094196. The cubic root of 520309344 is about 804.3045800294.

The spelling of 520309344 in words is "five hundred twenty million, three hundred nine thousand, three hundred forty-four".