13187056 has 10 divisors (see below), whose sum is σ = 25549952. Its totient is φ = 6593520.

The previous prime is 13187047. The next prime is 13187071. The reversal of 13187056 is 65078131.

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 as a sum of consecutive naturals, namely, 412080 + ... + 412111.

Almost surely, 2^13187056 is an apocalyptic number.

13187056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13187056 is a deficient number, since it is larger than the sum of its proper divisors (12362896).

13187056 is an equidigital number, since it uses as much as digits as its factorization.

13187056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824199 (or 824193 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 13187056 is about 3631.3986286278. The cubic root of 13187056 is about 236.2558749227.

The spelling of 13187056 in words is "thirteen million, one hundred eighty-seven thousand, fifty-six".