516128072 has 16 divisors (see below), whose sum is σ = 969259500. Its totient is φ = 257658880.

The previous prime is 516128071. The next prime is 516128077. The reversal of 516128072 is 270821615.

It can be written as a sum of positive squares in 2 ways, for example, as 447999556 + 68128516 = 21166^2 + 8254^2 .

It is not an unprimeable number, because it can be changed into a prime (516128071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45197 + ... + 55452.

Almost surely, 2^516128072 is an apocalyptic number.

It is an amenable number.

516128072 is a deficient number, since it is larger than the sum of its proper divisors (453131428).

516128072 is a wasteful number, since it uses less digits than its factorization.

516128072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101296 (or 101292 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 516128072 is about 22718.4522360129. The cubic root of 516128072 is about 802.1442849177.

Adding to 516128072 its reverse (270821615), we get a palindrome (786949687).

It can be divided in two parts, 5161 and 28072, that added together give a palindrome (33233).

The spelling of 516128072 in words is "five hundred sixteen million, one hundred twenty-eight thousand, seventy-two".