12281056 has 24 divisors (see below), whose sum is σ = 24300864. Its totient is φ = 6109440.

The previous prime is 12281051. The next prime is 12281063. The reversal of 12281056 is 65018221.

12281056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12281056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281051) 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, 6276 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (1012536).

Almost surely, 2^12281056 is an apocalyptic number.

12281056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12281056 is a deficient number, since it is larger than the sum of its proper divisors (12019808).

12281056 is a wasteful number, since it uses less digits than its factorization.

12281056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12281056 is about 3504.4337631064. The cubic root of 12281056 is about 230.7164552591.

Adding to 12281056 its reverse (65018221), we get a palindrome (77299277).

The spelling of 12281056 in words is "twelve million, two hundred eighty-one thousand, fifty-six".