12566172 has 24 divisors (see below), whose sum is σ = 30037392. Its totient is φ = 4086400.

The previous prime is 12566167. The next prime is 12566173. The reversal of 12566172 is 27166521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12279 + ... + 13262.

It is an arithmetic number, because the mean of its divisors is an integer number (1251558).

Almost surely, 2^12566172 is an apocalyptic number.

12566172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12566172 is an abundant number, since it is smaller than the sum of its proper divisors (17471220).

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

12566172 is a wasteful number, since it uses less digits than its factorization.

12566172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25589 (or 25587 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 12566172 is about 3544.8796876622. The cubic root of 12566172 is about 232.4882454457.

The spelling of 12566172 in words is "twelve million, five hundred sixty-six thousand, one hundred seventy-two".