518806480 has 20 divisors (see below), whose sum is σ = 1206225252. Its totient is φ = 207522560.

The previous prime is 518806451. The next prime is 518806487. The reversal of 518806480 is 84608815.

It can be written as a sum of positive squares in 2 ways, for example, as 259467664 + 259338816 = 16108^2 + 16104^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518806487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242461 + ... + 3242620.

Almost surely, 2^518806480 is an apocalyptic number.

It is an amenable number.

518806480 is an abundant number, since it is smaller than the sum of its proper divisors (687418772).

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

518806480 is a wasteful number, since it uses less digits than its factorization.

518806480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485094 (or 6485088 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 518806480 is about 22777.3238111943. The cubic root of 518806480 is about 803.5294475178.

The spelling of 518806480 in words is "five hundred eighteen million, eight hundred six thousand, four hundred eighty".