6128171728 has 20 divisors (see below), whose sum is σ = 13569523360. Its totient is φ = 2626359264.

The previous prime is 6128171717. The next prime is 6128171741. The reversal of 6128171728 is 8271718216.

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, 27357798 + ... + 27358021.

It is an arithmetic number, because the mean of its divisors is an integer number (678476168).

Almost surely, 2^6128171728 is an apocalyptic number.

It is an amenable number.

6128171728 is an abundant number, since it is smaller than the sum of its proper divisors (7441351632).

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

6128171728 is a wasteful number, since it uses less digits than its factorization.

6128171728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54715834 (or 54715828 counting only the distinct ones).

The product of its digits is 75264, while the sum is 43.

The square root of 6128171728 is about 78282.6400168007. The cubic root of 6128171728 is about 1829.9686188095.

The spelling of 6128171728 in words is "six billion, one hundred twenty-eight million, one hundred seventy-one thousand, seven hundred twenty-eight".