12017056 has 12 divisors (see below), whose sum is σ = 23658642. Its totient is φ = 6008512.

The previous prime is 12017051. The next prime is 12017069. The reversal of 12017056 is 65071021.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 1648656 = 3220^2 + 1284^2 .

It is not an unprimeable number, because it can be changed into a prime (12017051) by changing a digit.

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 as a sum of consecutive naturals, namely, 187735 + ... + 187798.

Almost surely, 2^12017056 is an apocalyptic number.

12017056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12017056 is a deficient number, since it is larger than the sum of its proper divisors (11641586).

12017056 is an equidigital number, since it uses as much as digits as its factorization.

12017056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375543 (or 375535 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 12017056 is about 3466.5625625394. The cubic root of 12017056 is about 229.0512651955.

Adding to 12017056 its reverse (65071021), we get a palindrome (77088077).

The spelling of 12017056 in words is "twelve million, seventeen thousand, fifty-six".