6428128574 has 32 divisors (see below), whose sum is σ = 11445235200. Its totient is φ = 2649276000.

The previous prime is 6428128559. The next prime is 6428128591. The reversal of 6428128574 is 4758218246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70367 + ... + 133445.

It is an arithmetic number, because the mean of its divisors is an integer number (357663600).

Almost surely, 2^6428128574 is an apocalyptic number.

6428128574 is a deficient number, since it is larger than the sum of its proper divisors (5017106626).

6428128574 is a wasteful number, since it uses less digits than its factorization.

6428128574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63368.

The product of its digits is 860160, while the sum is 47.

The square root of 6428128574 is about 80175.6108426995. The cubic root of 6428128574 is about 1859.3515847887.

The spelling of 6428128574 in words is "six billion, four hundred twenty-eight million, one hundred twenty-eight thousand, five hundred seventy-four".