5128312828 has 12 divisors (see below), whose sum is σ = 8975093400. Its totient is φ = 2564000432.

The previous prime is 5128312801. The next prime is 5128312879. The reversal of 5128312828 is 8282138215.

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, 66975 + ... + 121417.

It is an arithmetic number, because the mean of its divisors is an integer number (747924450).

Almost surely, 2^5128312828 is an apocalyptic number.

It is an amenable number.

5128312828 is a deficient number, since it is larger than the sum of its proper divisors (3846780572).

5128312828 is a wasteful number, since it uses less digits than its factorization.

5128312828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77996 (or 77994 counting only the distinct ones).

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

The square root of 5128312828 is about 71612.2393728893. The cubic root of 5128312828 is about 1724.4800312527.

The spelling of 5128312828 in words is "five billion, one hundred twenty-eight million, three hundred twelve thousand, eight hundred twenty-eight".