12000028 has 24 divisors (see below), whose sum is σ = 22453200. Its totient is φ = 5591808.

The previous prime is 12000017. The next prime is 12000029. The reversal of 12000028 is 82000021.

12000028 is a modest number, since divided by 28 gives 12 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11999981 and 12000017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000029) 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 7 ways as a sum of consecutive naturals, for example, 6603 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (935550).

Almost surely, 2^12000028 is an apocalyptic number.

It is an amenable number.

12000028 is a deficient number, since it is larger than the sum of its proper divisors (10453172).

12000028 is a wasteful number, since it uses less digits than its factorization.

12000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12000028 is about 3464.1056565873. The cubic root of 12000028 is about 228.9430265772.

Adding to 12000028 its reverse (82000021), we get a palindrome (94000049).

The spelling of 12000028 in words is "twelve million, twenty-eight", and thus it is an aban number and an uban number.