12128873 has 8 divisors (see below), whose sum is σ = 12700800. Its totient is φ = 11567248.

The previous prime is 12128869. The next prime is 12128887. The reversal of 12128873 is 37882121.

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 12128873 - 2² = 12128869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12128173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^12128873 is an apocalyptic number.

It is an amenable number.

12128873 is a deficient number, since it is larger than the sum of its proper divisors (571927).

12128873 is an equidigital number, since it uses as much as digits as its factorization.

12128873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its digits is 5376, while the sum is 32.

The square root of 12128873 is about 3482.6531552826. The cubic root of 12128873 is about 229.7595028676.

The spelling of 12128873 in words is "twelve million, one hundred twenty-eight thousand, eight hundred seventy-three".