928728171 has 12 divisors (see below), whose sum is σ = 1533138672. Its totient is φ = 530701776.

The previous prime is 928728127. The next prime is 928728179. The reversal of 928728171 is 171827829.

It is not a de Polignac number, because 928728171 - 2⁶ = 928728107 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (928728179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7370796 + ... + 7370921.

It is an arithmetic number, because the mean of its divisors is an integer number (127761556).

Almost surely, 2^928728171 is an apocalyptic number.

928728171 is a deficient number, since it is larger than the sum of its proper divisors (604410501).

928728171 is a wasteful number, since it uses less digits than its factorization.

928728171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14741730 (or 14741727 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 928728171 is about 30475.0417719156. The cubic root of 928728171 is about 975.6548468666.

The spelling of 928728171 in words is "nine hundred twenty-eight million, seven hundred twenty-eight thousand, one hundred seventy-one".