12081056 has 48 divisors (see below), whose sum is σ = 25941384. Its totient is φ = 5505024.

The previous prime is 12081037. The next prime is 12081061. The reversal of 12081056 is 65018021.

It can be written as a sum of positive squares in 4 ways, for example, as 8410000 + 3671056 = 2900^2 + 1916^2 .

It is an unprimeable number.

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, 46880 + ... + 47136.

Almost surely, 2^12081056 is an apocalyptic number.

12081056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12081056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12970692).

12081056 is an abundant number, since it is smaller than the sum of its proper divisors (13860328).

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

12081056 is a wasteful number, since it uses less digits than its factorization.

12081056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 12081056 is about 3475.7813510058. The cubic root of 12081056 is about 229.4571697627.

Adding to 12081056 its reverse (65018021), we get a palindrome (77099077).

The spelling of 12081056 in words is "twelve million, eighty-one thousand, fifty-six".