12172916 has 24 divisors (see below), whose sum is σ = 24748416. Its totient is φ = 5130720.

The previous prime is 12172907. The next prime is 12172921. The reversal of 12172916 is 61927121.

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, 1856 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^12172916 is an apocalyptic number.

It is an amenable number.

12172916 is an abundant number, since it is smaller than the sum of its proper divisors (12575500).

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

12172916 is a wasteful number, since it uses less digits than its factorization.

12172916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199 (or 7197 counting only the distinct ones).

The product of its digits is 1512, while the sum is 29.

The square root of 12172916 is about 3488.9706218310. The cubic root of 12172916 is about 230.0372718425.

It can be divided in two parts, 121 and 72916, that added together give a palindrome (73037).

The spelling of 12172916 in words is "twelve million, one hundred seventy-two thousand, nine hundred sixteen".