12055728 has 40 divisors (see below), whose sum is σ = 32785600. Its totient is φ = 3806784.

The previous prime is 12055723. The next prime is 12055741. The reversal of 12055728 is 82755021.

It is a junction number, because it is equal to n+sod(n) for n = 12055695 and 12055704.

It is not an unprimeable number, because it can be changed into a prime (12055721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5698 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (819640).

Almost surely, 2^12055728 is an apocalyptic number.

It is an amenable number.

12055728 is an abundant number, since it is smaller than the sum of its proper divisors (20729872).

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

12055728 is a wasteful number, since it uses less digits than its factorization.

12055728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249 (or 13243 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 12055728 is about 3472.1359420391. The cubic root of 12055728 is about 229.2967048346.

The spelling of 12055728 in words is "twelve million, fifty-five thousand, seven hundred twenty-eight".