520289968 has 40 divisors (see below), whose sum is σ = 1109478096. Its totient is φ = 234393600.

The previous prime is 520289951. The next prime is 520290013. The reversal of 520289968 is 869982025.

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, 6808 + ... + 32968.

Almost surely, 2^520289968 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 520289968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554739048).

520289968 is an abundant number, since it is smaller than the sum of its proper divisors (589188128).

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

520289968 is a wasteful number, since it uses less digits than its factorization.

520289968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293 (or 26287 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 520289968 is about 22809.8655848736. The cubic root of 520289968 is about 804.2945959695.

The spelling of 520289968 in words is "five hundred twenty million, two hundred eighty-nine thousand, nine hundred sixty-eight".