520840008 has 96 divisors (see below), whose sum is σ = 1599124800. Its totient is φ = 151818624.

The previous prime is 520840003. The next prime is 520840069. The reversal of 520840008 is 800048025.

It is not an unprimeable number, because it can be changed into a prime (520840003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3141 + ... + 32427.

It is an arithmetic number, because the mean of its divisors is an integer number (16657550).

Almost surely, 2^520840008 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 520840008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799562400).

520840008 is an abundant number, since it is smaller than the sum of its proper divisors (1078284792).

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

520840008 is a wasteful number, since it uses less digits than its factorization.

520840008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29331 (or 29324 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 520840008 is about 22821.9194635333. The cubic root of 520840008 is about 804.5779241272.

The spelling of 520840008 in words is "five hundred twenty million, eight hundred forty thousand, eight".