12587256 has 96 divisors (see below), whose sum is σ = 38862720. Its totient is φ = 3643200.

The previous prime is 12587251. The next prime is 12587257. The reversal of 12587256 is 65278521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12587256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17871 + ... + 18561.

It is an arithmetic number, because the mean of its divisors is an integer number (404820).

Almost surely, 2^12587256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12587256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19431360).

12587256 is an abundant number, since it is smaller than the sum of its proper divisors (26275464).

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

12587256 is a wasteful number, since it uses less digits than its factorization.

12587256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 730 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 12587256 is about 3547.8523080872. The cubic root of 12587256 is about 232.6181986581.

The spelling of 12587256 in words is "twelve million, five hundred eighty-seven thousand, two hundred fifty-six".