12747172 has 6 divisors (see below), whose sum is σ = 22307558. Its totient is φ = 6373584.

The previous prime is 12747167. The next prime is 12747179. The reversal of 12747172 is 27174721.

It can be written as a sum of positive squares in only one way, i.e., 12574116 + 173056 = 3546^2 + 416^2 .

It is not an unprimeable number, because it can be changed into a prime (12747179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1593393 + ... + 1593400.

Almost surely, 2^12747172 is an apocalyptic number.

It is an amenable number.

12747172 is a deficient number, since it is larger than the sum of its proper divisors (9560386).

12747172 is a wasteful number, since it uses less digits than its factorization.

12747172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186797 (or 3186795 counting only the distinct ones).

The product of its digits is 5488, while the sum is 31.

The square root of 12747172 is about 3570.3181931027. The cubic root of 12747172 is about 233.5991627933.

The spelling of 12747172 in words is "twelve million, seven hundred forty-seven thousand, one hundred seventy-two".