12028986 has 48 divisors (see below), whose sum is σ = 27597024. Its totient is φ = 3925584.

The previous prime is 12028981. The next prime is 12028987. The reversal of 12028986 is 68982021.

It is a self number, because there is not a number n which added to its sum of digits gives 12028986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028981) 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 in 23 ways as a sum of consecutive naturals, for example, 25525 + ... + 25991.

It is an arithmetic number, because the mean of its divisors is an integer number (574938).

Almost surely, 2^12028986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12028986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13798512).

12028986 is an abundant number, since it is smaller than the sum of its proper divisors (15568038).

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

12028986 is an equidigital number, since it uses as much as digits as its factorization.

12028986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12028986 is about 3468.2828604368. The cubic root of 12028986 is about 229.1270374376.

The spelling of 12028986 in words is "twelve million, twenty-eight thousand, nine hundred eighty-six".