12657984 has 28 divisors (see below), whose sum is σ = 33491424. Its totient is φ = 4219264.

The previous prime is 12657977. The next prime is 12657991. The reversal of 12657984 is 48975621.

It is an interprime number because it is at equal distance from previous prime (12657977) and next prime (12657991).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 32772 + ... + 33155.

Almost surely, 2^12657984 is an apocalyptic number.

It is an amenable number.

12657984 is an abundant number, since it is smaller than the sum of its proper divisors (20833440).

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

12657984 is an equidigital number, since it uses as much as digits as its factorization.

12657984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65942 (or 65932 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 12657984 is about 3557.8060655410. The cubic root of 12657984 is about 233.0530803073.

The spelling of 12657984 in words is "twelve million, six hundred fifty-seven thousand, nine hundred eighty-four".