171424228 has 12 divisors (see below), whose sum is σ = 306375552. Its totient is φ = 83888360.

The previous prime is 171424223. The next prime is 171424229. The reversal of 171424228 is 822424171.

It is a self number, because there is not a number n which added to its sum of digits gives 171424228.

It is not an unprimeable number, because it can be changed into a prime (171424223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455728 + ... + 456103.

It is an arithmetic number, because the mean of its divisors is an integer number (25531296).

Almost surely, 2^171424228 is an apocalyptic number.

It is an amenable number.

171424228 is a deficient number, since it is larger than the sum of its proper divisors (134951324).

171424228 is a wasteful number, since it uses less digits than its factorization.

171424228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911882 (or 911880 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 171424228 is about 13092.9075456905. The cubic root of 171424228 is about 555.5085326304.

Adding to 171424228 its reverse (822424171), we get a palindrome (993848399).

The spelling of 171424228 in words is "one hundred seventy-one million, four hundred twenty-four thousand, two hundred twenty-eight".