28173171 has 8 divisors (see below), whose sum is σ = 40453840. Its totient is φ = 17337312.

The previous prime is 28173161. The next prime is 28173209. The reversal of 28173171 is 17137182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28173171 - 2⁶ = 28173107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28173161) 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, 361156 + ... + 361233.

It is an arithmetic number, because the mean of its divisors is an integer number (5056730).

Almost surely, 2^28173171 is an apocalyptic number.

28173171 is a deficient number, since it is larger than the sum of its proper divisors (12280669).

28173171 is a wasteful number, since it uses less digits than its factorization.

28173171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722405.

The product of its digits is 2352, while the sum is 30.

The square root of 28173171 is about 5307.8405213420. The cubic root of 28173171 is about 304.2836219364.

The spelling of 28173171 in words is "twenty-eight million, one hundred seventy-three thousand, one hundred seventy-one".