13171228 has 24 divisors (see below), whose sum is σ = 26604032. Its totient is φ = 5588784.

The previous prime is 13171183. The next prime is 13171241. The reversal of 13171228 is 82217131.

It is a happy number.

13171228 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

13171228 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601 + ... + 5167.

Almost surely, 2^13171228 is an apocalyptic number.

It is an amenable number.

13171228 is an abundant number, since it is smaller than the sum of its proper divisors (13432804).

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

13171228 is a wasteful number, since it uses less digits than its factorization.

13171228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681 (or 4679 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 13171228 is about 3629.2186486901. The cubic root of 13171228 is about 236.1613136321.

Adding to 13171228 its reverse (82217131), we get a palindrome (95388359).

The spelling of 13171228 in words is "thirteen million, one hundred seventy-one thousand, two hundred twenty-eight".