12786940 has 24 divisors (see below), whose sum is σ = 27195840. Its totient is φ = 5049408.

The previous prime is 12786937. The next prime is 12786947. The reversal of 12786940 is 4968721.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12786940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2467 + ... + 5626.

It is an arithmetic number, because the mean of its divisors is an integer number (1133160).

Almost surely, 2^12786940 is an apocalyptic number.

12786940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12786940 is an abundant number, since it is smaller than the sum of its proper divisors (14408900).

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

12786940 is a wasteful number, since it uses less digits than its factorization.

12786940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8181 (or 8179 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 12786940 is about 3575.8831077092. The cubic root of 12786940 is about 233.8418343345.

The spelling of 12786940 in words is "twelve million, seven hundred eighty-six thousand, nine hundred forty".