520969280 has 112 divisors (see below), whose sum is σ = 1358548464. Its totient is φ = 189112320.

The previous prime is 520969279. The next prime is 520969289. The reversal of 520969280 is 82969025.

It can be written as a sum of positive squares in 8 ways, for example, as 147088384 + 373880896 = 12128^2 + 19336^2 .

It is not an unprimeable number, because it can be changed into a prime (520969289) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 252734 + ... + 254786.

It is an arithmetic number, because the mean of its divisors is an integer number (12129897).

Almost surely, 2^520969280 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 520969280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679274232).

520969280 is an abundant number, since it is smaller than the sum of its proper divisors (837579184).

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

520969280 is a wasteful number, since it uses less digits than its factorization.

520969280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 520969280 is about 22824.7514772889. The cubic root of 520969280 is about 804.6444837821.

The spelling of 520969280 in words is "five hundred twenty million, nine hundred sixty-nine thousand, two hundred eighty".