12033728 has 28 divisors (see below), whose sum is σ = 27291792. Its totient is φ = 5157120.

The previous prime is 12033727. The next prime is 12033737. The reversal of 12033728 is 82733021.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 12033697 and 12033706.

It is not an unprimeable number, because it can be changed into a prime (12033727) 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 3 ways as a sum of consecutive naturals, for example, 12983 + ... + 13878.

Almost surely, 2^12033728 is an apocalyptic number.

It is an amenable number.

12033728 is an abundant number, since it is smaller than the sum of its proper divisors (15258064).

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

12033728 is an equidigital number, since it uses as much as digits as its factorization.

12033728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26880 (or 26870 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12033728 is about 3468.9664166723. The cubic root of 12033728 is about 229.1571418778.

Adding to 12033728 its reverse (82733021), we get a palindrome (94766749).

The spelling of 12033728 in words is "twelve million, thirty-three thousand, seven hundred twenty-eight".