12881256 has 16 divisors (see below), whose sum is σ = 32203200. Its totient is φ = 4293744.

The previous prime is 12881251. The next prime is 12881273. The reversal of 12881256 is 65218821.

It is a super-2 number, since 2×12881256² = 331853512275072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12881251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268336 + ... + 268383.

It is an arithmetic number, because the mean of its divisors is an integer number (2012700).

Almost surely, 2^12881256 is an apocalyptic number.

It is an amenable number.

12881256 is an abundant number, since it is smaller than the sum of its proper divisors (19321944).

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

12881256 is a wasteful number, since it uses less digits than its factorization.

12881256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536728 (or 536724 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 12881256 is about 3589.0466700783. The cubic root of 12881256 is about 234.4153627908.

The spelling of 12881256 in words is "twelve million, eight hundred eighty-one thousand, two hundred fifty-six".