520408560 has 160 divisors (see below), whose sum is σ = 1862595072. Its totient is φ = 117734400.

The previous prime is 520408547. The next prime is 520408561. The reversal of 520408560 is 65804025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520408561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168147 + ... + 171213.

Almost surely, 2^520408560 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 520408560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931297536).

520408560 is an abundant number, since it is smaller than the sum of its proper divisors (1342186512).

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

520408560 is a wasteful number, since it uses less digits than its factorization.

520408560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3185 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 520408560 is about 22812.4650136718. The cubic root of 520408560 is about 804.3557001387.

The spelling of 520408560 in words is "five hundred twenty million, four hundred eight thousand, five hundred sixty".