It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 12887841.
Almost surely, 212887841 is an apocalyptic number.
12887841 is the 2073-rd octagonal number.
It is an amenable number.
12887841 is an equidigital number, since it uses as much as digits as its factorization.
12887841 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6911.
The square root of 12887841 is about 3589.9639273954. The cubic root of 12887841 is about 234.4553009821.
The spelling of 12887841 in words is "twelve million, eight hundred eighty-seven thousand, eight hundred forty-one".