520956240 has 240 divisors, whose sum is σ = 1940590080. Its totient is φ = 115153920.

The previous prime is 520956229. The next prime is 520956281. The reversal of 520956240 is 42659025.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 363846 + ... + 365274.

It is an arithmetic number, because the mean of its divisors is an integer number (8085792).

Almost surely, 2^520956240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520956240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970295040).

520956240 is an abundant number, since it is smaller than the sum of its proper divisors (1419633840).

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

520956240 is a wasteful number, since it uses less digits than its factorization.

520956240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 520956240 is about 22824.4658206934. The cubic root of 520956240 is about 804.6377702375.

The spelling of 520956240 in words is "five hundred twenty million, nine hundred fifty-six thousand, two hundred forty".