12668140 has 12 divisors (see below), whose sum is σ = 26603136. Its totient is φ = 5067248.

The previous prime is 12668137. The next prime is 12668153. The reversal of 12668140 is 4186621.

It is a junction number, because it is equal to n+sod(n) for n = 12668099 and 12668108.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 316684 + ... + 316723.

It is an arithmetic number, because the mean of its divisors is an integer number (2216928).

Almost surely, 2^12668140 is an apocalyptic number.

12668140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12668140 is an abundant number, since it is smaller than the sum of its proper divisors (13934996).

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

12668140 is a wasteful number, since it uses less digits than its factorization.

12668140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633416 (or 633414 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12668140 is about 3559.2330634562. The cubic root of 12668140 is about 233.1153928722.

The spelling of 12668140 in words is "twelve million, six hundred sixty-eight thousand, one hundred forty".