12766940 has 12 divisors (see below), whose sum is σ = 26810616. Its totient is φ = 5106768.

The previous prime is 12766937. The next prime is 12766967. The reversal of 12766940 is 4966721.

It is a self number, because there is not a number n which added to its sum of digits gives 12766940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319154 + ... + 319193.

It is an arithmetic number, because the mean of its divisors is an integer number (2234218).

Almost surely, 2^12766940 is an apocalyptic number.

12766940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12766940 is an abundant number, since it is smaller than the sum of its proper divisors (14043676).

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

12766940 is a wasteful number, since it uses less digits than its factorization.

12766940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638356 (or 638354 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 12766940 is about 3573.0855013559. The cubic root of 12766940 is about 233.7198537004.

The spelling of 12766940 in words is "twelve million, seven hundred sixty-six thousand, nine hundred forty".