12081256 has 64 divisors (see below), whose sum is σ = 26542080. Its totient is φ = 5100480.

The previous prime is 12081241. The next prime is 12081257. The reversal of 12081256 is 65218021.

It is a self number, because there is not a number n which added to its sum of digits gives 12081256.

It is not an unprimeable number, because it can be changed into a prime (12081257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95065 + ... + 95191.

It is an arithmetic number, because the mean of its divisors is an integer number (414720).

Almost surely, 2^12081256 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 12081256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13271040).

12081256 is an abundant number, since it is smaller than the sum of its proper divisors (14460824).

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

12081256 is a wasteful number, since it uses less digits than its factorization.

12081256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 210 counting only the distinct ones).

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

The square root of 12081256 is about 3475.8101213962. The cubic root of 12081256 is about 229.4584359649.

Adding to 12081256 its reverse (65218021), we get a palindrome (77299277).

The spelling of 12081256 in words is "twelve million, eighty-one thousand, two hundred fifty-six".