518216472 has 48 divisors (see below), whose sum is σ = 1426523280. Its totient is φ = 169905600.

The previous prime is 518216467. The next prime is 518216509. The reversal of 518216472 is 274612815.

518216472 is a `hidden beast` number, since 5 + 1 + 8 + 2 + 1 + 647 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54604 + ... + 63387.

It is an arithmetic number, because the mean of its divisors is an integer number (29719235).

Almost surely, 2^518216472 is an apocalyptic number.

It is an amenable number.

518216472 is an abundant number, since it is smaller than the sum of its proper divisors (908306808).

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

518216472 is a wasteful number, since it uses less digits than its factorization.

518216472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118064 (or 118057 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 518216472 is about 22764.3684735597. The cubic root of 518216472 is about 803.2247297654.

The spelling of 518216472 in words is "five hundred eighteen million, two hundred sixteen thousand, four hundred seventy-two".