171072328 has 48 divisors (see below), whose sum is σ = 374931180. Its totient is φ = 72963072.

The previous prime is 171072301. The next prime is 171072337. The reversal of 171072328 is 823270171.

It can be written as a sum of positive squares in 2 ways, for example, as 136002244 + 35070084 = 11662^2 + 5922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 171072328.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90400 + ... + 92272.

Almost surely, 2^171072328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171072328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187465590).

171072328 is an abundant number, since it is smaller than the sum of its proper divisors (203858852).

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

171072328 is a wasteful number, since it uses less digits than its factorization.

171072328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 171072328 is about 13079.4620684491. The cubic root of 171072328 is about 555.1281558878.

The spelling of 171072328 in words is "one hundred seventy-one million, seventy-two thousand, three hundred twenty-eight".