171296728 has 32 divisors (see below), whose sum is σ = 328224960. Its totient is φ = 83790880.

The previous prime is 171296701. The next prime is 171296737. The reversal of 171296728 is 827692171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69843 + ... + 72253.

It is an arithmetic number, because the mean of its divisors is an integer number (10257030).

Almost surely, 2^171296728 is an apocalyptic number.

It is an amenable number.

171296728 is a deficient number, since it is larger than the sum of its proper divisors (156928232).

171296728 is a wasteful number, since it uses less digits than its factorization.

171296728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2603 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 171296728 is about 13088.0375916331. The cubic root of 171296728 is about 555.3707751584.

The spelling of 171296728 in words is "one hundred seventy-one million, two hundred ninety-six thousand, seven hundred twenty-eight".