12030728289 has 16 divisors (see below), whose sum is σ = 16770582144. Its totient is φ = 7657020800.

The previous prime is 12030728273. The next prime is 12030728309. The reversal of 12030728289 is 98282703021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12030728289 - 2⁴ = 12030728273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12030728289.

It is not an unprimeable number, because it can be changed into a prime (12030728219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131382 + ... + 203279.

It is an arithmetic number, because the mean of its divisors is an integer number (1048161384).

Almost surely, 2^12030728289 is an apocalyptic number.

It is an amenable number.

12030728289 is a deficient number, since it is larger than the sum of its proper divisors (4739853855).

12030728289 is a wasteful number, since it uses less digits than its factorization.

12030728289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335208.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 12030728289 in words is "twelve billion, thirty million, seven hundred twenty-eight thousand, two hundred eighty-nine".