12878984 has 8 divisors (see below), whose sum is σ = 24148110. Its totient is φ = 6439488.

The previous prime is 12878977. The next prime is 12878989. The reversal of 12878984 is 48987821.

It can be written as a sum of positive squares in only one way, i.e., 10562500 + 2316484 = 3250^2 + 1522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12878989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804929 + ... + 804944.

Almost surely, 2^12878984 is an apocalyptic number.

It is an amenable number.

12878984 is a deficient number, since it is larger than the sum of its proper divisors (11269126).

12878984 is a wasteful number, since it uses less digits than its factorization.

12878984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609879 (or 1609875 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 12878984 is about 3588.7301375278. The cubic root of 12878984 is about 234.4015798952.

The spelling of 12878984 in words is "twelve million, eight hundred seventy-eight thousand, nine hundred eighty-four".