13087256 has 32 divisors (see below), whose sum is σ = 30203040. Its totient is φ = 5177088.

The previous prime is 13087213. The next prime is 13087259. The reversal of 13087256 is 65278031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8261 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (943845).

Almost surely, 2^13087256 is an apocalyptic number.

It is an amenable number.

13087256 is an abundant number, since it is smaller than the sum of its proper divisors (17115784).

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

13087256 is a wasteful number, since it uses less digits than its factorization.

13087256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18003 (or 17999 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 13087256 is about 3617.6312692147. The cubic root of 13087256 is about 235.6583680906.

The spelling of 13087256 in words is "thirteen million, eighty-seven thousand, two hundred fifty-six".