12728233 has 8 divisors (see below), whose sum is σ = 15312320. Its totient is φ = 10335600.

The previous prime is 12728231. The next prime is 12728237. The reversal of 12728233 is 33282721.

12728233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12728233 - 2¹ = 12728231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12728231) 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, 47718 + ... + 47983.

It is an arithmetic number, because the mean of its divisors is an integer number (1914040).

Almost surely, 2^12728233 is an apocalyptic number.

It is an amenable number.

12728233 is a deficient number, since it is larger than the sum of its proper divisors (2584087).

12728233 is an equidigital number, since it uses as much as digits as its factorization.

12728233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95727.

The product of its digits is 4032, while the sum is 28.

The square root of 12728233 is about 3567.6649226069. The cubic root of 12728233 is about 233.4834161426.

The spelling of 12728233 in words is "twelve million, seven hundred twenty-eight thousand, two hundred thirty-three".