12786040 has 32 divisors (see below), whose sum is σ = 30462480. Its totient is φ = 4813312.

The previous prime is 12786029. The next prime is 12786049. The reversal of 12786040 is 4068721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786049) 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 7 ways as a sum of consecutive naturals, for example, 8722 + ... + 10081.

Almost surely, 2^12786040 is an apocalyptic number.

12786040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12786040 is an abundant number, since it is smaller than the sum of its proper divisors (17676440).

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

12786040 is a wasteful number, since it uses less digits than its factorization.

12786040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831 (or 18827 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12786040 is about 3575.7572624550. The cubic root of 12786040 is about 233.8363479401.

The spelling of 12786040 in words is "twelve million, seven hundred eighty-six thousand, forty".