171928072 has 16 divisors (see below), whose sum is σ = 341328060. Its totient is φ = 80907264.

The previous prime is 171928063. The next prime is 171928087. The reversal of 171928072 is 270829171.

It can be written as a sum of positive squares in 2 ways, for example, as 167288356 + 4639716 = 12934^2 + 2154^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631953 + ... + 632224.

Almost surely, 2^171928072 is an apocalyptic number.

It is an amenable number.

171928072 is a deficient number, since it is larger than the sum of its proper divisors (169399988).

171928072 is a wasteful number, since it uses less digits than its factorization.

171928072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264200 (or 1264196 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 171928072 is about 13112.1345325618. The cubic root of 171928072 is about 556.0522439392.

It can be divided in two parts, 1719 and 28072, that added together give a cube (29791 = 31³).

The spelling of 171928072 in words is "one hundred seventy-one million, nine hundred twenty-eight thousand, seventy-two".