12776920 has 32 divisors (see below), whose sum is σ = 30960720. Its totient is φ = 4717440.

The previous prime is 12776879. The next prime is 12776921. The reversal of 12776920 is 2967721.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776921) 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, 11766 + ... + 12805.

Almost surely, 2^12776920 is an apocalyptic number.

12776920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12776920 is an abundant number, since it is smaller than the sum of its proper divisors (18183800).

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

12776920 is a wasteful number, since it uses less digits than its factorization.

12776920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24595 (or 24591 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 12776920 is about 3574.4817806222. The cubic root of 12776920 is about 233.7807379483.

The spelling of 12776920 in words is "twelve million, seven hundred seventy-six thousand, nine hundred twenty".