13147172 has 12 divisors (see below), whose sum is σ = 23063040. Its totient is φ = 6557736.

The previous prime is 13147157. The next prime is 13147177. The reversal of 13147172 is 27174131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13147177) 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, 1988 + ... + 5499.

It is an arithmetic number, because the mean of its divisors is an integer number (1921920).

Almost surely, 2^13147172 is an apocalyptic number.

It is an amenable number.

13147172 is a deficient number, since it is larger than the sum of its proper divisors (9915868).

13147172 is a wasteful number, since it uses less digits than its factorization.

13147172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7930 (or 7928 counting only the distinct ones).

The product of its digits is 1176, while the sum is 26.

The square root of 13147172 is about 3625.9029220320. The cubic root of 13147172 is about 236.0174505913.

The spelling of 13147172 in words is "thirteen million, one hundred forty-seven thousand, one hundred seventy-two".