12005256 has 32 divisors (see below), whose sum is σ = 30713760. Its totient is φ = 3908352.

The previous prime is 12005243. The next prime is 12005269. The reversal of 12005256 is 65250021.

It is an interprime number because it is at equal distance from previous prime (12005243) and next prime (12005269).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4785 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (959805).

Almost surely, 2^12005256 is an apocalyptic number.

It is an amenable number.

12005256 is an abundant number, since it is smaller than the sum of its proper divisors (18708504).

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

12005256 is a wasteful number, since it uses less digits than its factorization.

12005256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685 (or 11681 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12005256 is about 3464.8601703388. The cubic root of 12005256 is about 228.9762692876.

Adding to 12005256 its reverse (65250021), we get a palindrome (77255277).

The spelling of 12005256 in words is "twelve million, five thousand, two hundred fifty-six".