520484640 has 192 divisors, whose sum is σ = 1778112000. Its totient is φ = 127217664.

The previous prime is 520484593. The next prime is 520484669. The reversal of 520484640 is 46484025.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491186 + ... + 1491534.

It is an arithmetic number, because the mean of its divisors is an integer number (9261000).

Almost surely, 2^520484640 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 520484640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889056000).

520484640 is an abundant number, since it is smaller than the sum of its proper divisors (1257627360).

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

520484640 is a wasteful number, since it uses less digits than its factorization.

520484640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 520484640 is about 22814.1324621385. The cubic root of 520484640 is about 804.3948952407.

The spelling of 520484640 in words is "five hundred twenty million, four hundred eighty-four thousand, six hundred forty".