12672147 has 4 divisors (see below), whose sum is σ = 16896200. Its totient is φ = 8448096.

The previous prime is 12672139. The next prime is 12672161. The reversal of 12672147 is 74127621.

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

It is not a de Polignac number, because 12672147 - 2³ = 12672139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12672137) 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, 2112022 + ... + 2112027.

It is an arithmetic number, because the mean of its divisors is an integer number (4224050).

Almost surely, 2^12672147 is an apocalyptic number.

12672147 is a deficient number, since it is larger than the sum of its proper divisors (4224053).

12672147 is an equidigital number, since it uses as much as digits as its factorization.

12672147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224052.

The product of its digits is 4704, while the sum is 30.

The square root of 12672147 is about 3559.7959211168. The cubic root of 12672147 is about 233.1399688271.

Adding to 12672147 its reverse (74127621), we get a palindrome (86799768).

The spelling of 12672147 in words is "twelve million, six hundred seventy-two thousand, one hundred forty-seven".