12509168 has 40 divisors (see below), whose sum is σ = 28129152. Its totient is φ = 5277888.

The previous prime is 12509149. The next prime is 12509177. The reversal of 12509168 is 86190521.

It is a congruent number.

It is an unprimeable number.

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, 6671 + ... + 8337.

Almost surely, 2^12509168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12509168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14064576).

12509168 is an abundant number, since it is smaller than the sum of its proper divisors (15619984).

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

12509168 is a wasteful number, since it uses less digits than its factorization.

12509168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12509168 is about 3536.8302192783. The cubic root of 12509168 is about 232.1361665967.

Adding to 12509168 its reverse (86190521), we get a palindrome (98699689).

The spelling of 12509168 in words is "twelve million, five hundred nine thousand, one hundred sixty-eight".