728064171 has 18 divisors (see below), whose sum is σ = 1086679620. Its totient is φ = 469713240.

The previous prime is 728064157. The next prime is 728064179. The reversal of 728064171 is 171460827.

728064171 is a `hidden beast` number, since 7 + 2 + 8 + 0 + 641 + 7 + 1 = 666.

728064171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728064171 - 2²¹ = 725967019 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (728064179) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33441 + ... + 50738.

It is an arithmetic number, because the mean of its divisors is an integer number (60371090).

Almost surely, 2^728064171 is an apocalyptic number.

728064171 is a deficient number, since it is larger than the sum of its proper divisors (358615449).

728064171 is a wasteful number, since it uses less digits than its factorization.

728064171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84247 (or 84213 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 728064171 is about 26982.6642680073. The cubic root of 728064171 is about 899.6147202749.

The spelling of 728064171 in words is "seven hundred twenty-eight million, sixty-four thousand, one hundred seventy-one".