171376728 has 32 divisors (see below), whose sum is σ = 453645360. Its totient is φ = 53765120.

The previous prime is 171376727. The next prime is 171376739. The reversal of 171376728 is 827673171.

It is a happy number.

171376728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 171376728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171376727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209613 + ... + 210428.

Almost surely, 2^171376728 is an apocalyptic number.

It is an amenable number.

171376728 is an abundant number, since it is smaller than the sum of its proper divisors (282268632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171376728 is a wasteful number, since it uses less digits than its factorization.

171376728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420067 (or 420063 counting only the distinct ones).

The product of its digits is 98784, while the sum is 42.

The square root of 171376728 is about 13091.0934608229. The cubic root of 171376728 is about 555.4572192053.

The spelling of 171376728 in words is "one hundred seventy-one million, three hundred seventy-six thousand, seven hundred twenty-eight".