12766780 has 24 divisors (see below), whose sum is σ = 28873152. Its totient is φ = 4713792.

The previous prime is 12766777. The next prime is 12766781. The reversal of 12766780 is 8766721.

It is a happy number.

12766780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12766781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24292 + ... + 24811.

It is an arithmetic number, because the mean of its divisors is an integer number (1203048).

Almost surely, 2^12766780 is an apocalyptic number.

12766780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12766780 is an abundant number, since it is smaller than the sum of its proper divisors (16106372).

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

12766780 is a wasteful number, since it uses less digits than its factorization.

12766780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49125 (or 49123 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 12766780 is about 3573.0631116732. The cubic root of 12766780 is about 233.7188773419.

The spelling of 12766780 in words is "twelve million, seven hundred sixty-six thousand, seven hundred eighty".