12907172 has 6 divisors (see below), whose sum is σ = 22587558. Its totient is φ = 6453584.

The previous prime is 12907171. The next prime is 12907177. The reversal of 12907172 is 27170921.

It can be written as a sum of positive squares in only one way, i.e., 11874916 + 1032256 = 3446^2 + 1016^2 .

It is not an unprimeable number, because it can be changed into a prime (12907171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613393 + ... + 1613400.

It is an arithmetic number, because the mean of its divisors is an integer number (3764593).

Almost surely, 2^12907172 is an apocalyptic number.

It is an amenable number.

12907172 is a deficient number, since it is larger than the sum of its proper divisors (9680386).

12907172 is a wasteful number, since it uses less digits than its factorization.

12907172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226797 (or 3226795 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12907172 is about 3592.6552854400. The cubic root of 12907172 is about 234.5724654545.

The spelling of 12907172 in words is "twelve million, nine hundred seven thousand, one hundred seventy-two".