12672291 has 4 divisors (see below), whose sum is σ = 16896392. Its totient is φ = 8448192.

The previous prime is 12672269. The next prime is 12672299. The reversal of 12672291 is 19227621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12672291 - 2⁹ = 12671779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12672299) 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 3 ways as a sum of consecutive naturals, for example, 2112046 + ... + 2112051.

It is an arithmetic number, because the mean of its divisors is an integer number (4224098).

Almost surely, 2^12672291 is an apocalyptic number.

12672291 is a deficient number, since it is larger than the sum of its proper divisors (4224101).

12672291 is an equidigital number, since it uses as much as digits as its factorization.

12672291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224100.

The product of its digits is 3024, while the sum is 30.

The square root of 12672291 is about 3559.8161469379. The cubic root of 12672291 is about 233.1408519194.

The spelling of 12672291 in words is "twelve million, six hundred seventy-two thousand, two hundred ninety-one".