520874320 has 20 divisors (see below), whose sum is σ = 1211032980. Its totient is φ = 208349696.

The previous prime is 520874293. The next prime is 520874327. The reversal of 520874320 is 23478025.

It can be written as a sum of positive squares in 2 ways, for example, as 261921856 + 258952464 = 16184^2 + 16092^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520874327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255385 + ... + 3255544.

It is an arithmetic number, because the mean of its divisors is an integer number (60551649).

Almost surely, 2^520874320 is an apocalyptic number.

It is an amenable number.

520874320 is an abundant number, since it is smaller than the sum of its proper divisors (690158660).

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

520874320 is a wasteful number, since it uses less digits than its factorization.

520874320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510942 (or 6510936 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 520874320 is about 22822.6711845919. The cubic root of 520874320 is about 804.5955917866.

The spelling of 520874320 in words is "five hundred twenty million, eight hundred seventy-four thousand, three hundred twenty".