171271228 has 12 divisors (see below), whose sum is σ = 301295232. Its totient is φ = 85186880.

The previous prime is 171271223. The next prime is 171271231. The reversal of 171271228 is 822172171.

It is a self number, because there is not a number n which added to its sum of digits gives 171271228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171271223) by changing a digit.

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, 111325 + ... + 112852.

It is an arithmetic number, because the mean of its divisors is an integer number (25107936).

Almost surely, 2^171271228 is an apocalyptic number.

It is an amenable number.

171271228 is a deficient number, since it is larger than the sum of its proper divisors (130024004).

171271228 is a wasteful number, since it uses less digits than its factorization.

171271228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224372 (or 224370 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 171271228 is about 13087.0633833569. The cubic root of 171271228 is about 555.3432154617.

The spelling of 171271228 in words is "one hundred seventy-one million, two hundred seventy-one thousand, two hundred twenty-eight".