171080728 has 48 divisors (see below), whose sum is σ = 396992880. Its totient is φ = 67676544.

The previous prime is 171080719. The next prime is 171080753. The reversal of 171080728 is 827080171.

It is a junction number, because it is equal to n+sod(n) for n = 171080693 and 171080702.

It is a congruent number.

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, 426 + ... + 18502.

It is an arithmetic number, because the mean of its divisors is an integer number (8270685).

Almost surely, 2^171080728 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 171080728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198496440).

171080728 is an abundant number, since it is smaller than the sum of its proper divisors (225912152).

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

171080728 is a wasteful number, since it uses less digits than its factorization.

171080728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18116 (or 18099 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 171080728 is about 13079.7831786311. The cubic root of 171080728 is about 555.1372417138.

The spelling of 171080728 in words is "one hundred seventy-one million, eighty thousand, seven hundred twenty-eight".