12668280 has 64 divisors (see below), whose sum is σ = 38253600. Its totient is φ = 3356160.

The previous prime is 12668267. The next prime is 12668287. The reversal of 12668280 is 8286621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668287) 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 in 15 ways as a sum of consecutive naturals, for example, 27250 + ... + 27710.

Almost surely, 2^12668280 is an apocalyptic number.

12668280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12668280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19126800).

12668280 is an abundant number, since it is smaller than the sum of its proper divisors (25585320).

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

12668280 is a wasteful number, since it uses less digits than its factorization.

12668280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 12668280 is about 3559.2527305602. The cubic root of 12668280 is about 233.1162516153.

The spelling of 12668280 in words is "twelve million, six hundred sixty-eight thousand, two hundred eighty".