518131072 has 32 divisors (see below), whose sum is σ = 1049151600. Its totient is φ = 254814720.

The previous prime is 518131039. The next prime is 518131099. The reversal of 518131072 is 270131815.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 518131072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25372 + ... + 40987.

Almost surely, 2^518131072 is an apocalyptic number.

It is an amenable number.

518131072 is an abundant number, since it is smaller than the sum of its proper divisors (531020528).

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

518131072 is an equidigital number, since it uses as much as digits as its factorization.

518131072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66434 (or 66422 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 518131072 is about 22762.4926578791. The cubic root of 518131072 is about 803.1806046014.

Adding to 518131072 its reverse (270131815), we get a palindrome (788262887).

The spelling of 518131072 in words is "five hundred eighteen million, one hundred thirty-one thousand, seventy-two".