12671980 has 12 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 5068784.

The previous prime is 12671969. The next prime is 12672007. The reversal of 12671980 is 8917621.

It is a happy number.

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, 316780 + ... + 316819.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^12671980 is an apocalyptic number.

12671980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12671980 is an abundant number, since it is smaller than the sum of its proper divisors (13939220).

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

12671980 is a wasteful number, since it uses less digits than its factorization.

12671980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633608 (or 633606 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12671980 is about 3559.7724646387. The cubic root of 12671980 is about 233.1389446769.

The spelling of 12671980 in words is "twelve million, six hundred seventy-one thousand, nine hundred eighty".