12887456 has 24 divisors (see below), whose sum is σ = 25453764. Its totient is φ = 6423040.

The previous prime is 12887449. The next prime is 12887461. The reversal of 12887456 is 65478821.

It can be written as a sum of positive squares in 2 ways, for example, as 11155600 + 1731856 = 3340^2 + 1316^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16286 + ... + 17058.

Almost surely, 2^12887456 is an apocalyptic number.

12887456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12887456 is a deficient number, since it is larger than the sum of its proper divisors (12566308).

12887456 is an equidigital number, since it uses as much as digits as its factorization.

12887456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1296 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 12887456 is about 3589.9103052862. The cubic root of 12887456 is about 234.4529663219.

The spelling of 12887456 in words is "twelve million, eight hundred eighty-seven thousand, four hundred fifty-six".