12667984 has 40 divisors (see below), whose sum is σ = 29531840. Its totient is φ = 5142528.

The previous prime is 12667969. The next prime is 12667987. The reversal of 12667984 is 48976621.

It is a self number, because there is not a number n which added to its sum of digits gives 12667984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12667987) 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, 849 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (738296).

Almost surely, 2^12667984 is an apocalyptic number.

12667984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12667984 is an abundant number, since it is smaller than the sum of its proper divisors (16863856).

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

12667984 is a wasteful number, since it uses less digits than its factorization.

12667984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987 (or 5981 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 12667984 is about 3559.2111485553. The cubic root of 12667984 is about 233.1144359796.

The spelling of 12667984 in words is "twelve million, six hundred sixty-seven thousand, nine hundred eighty-four".