12872306 has 4 divisors (see below), whose sum is σ = 19308462. Its totient is φ = 6436152.

The previous prime is 12872303. The next prime is 12872311. The reversal of 12872306 is 60327821.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7513081 + 5359225 = 2741^2 + 2315^2 .

It is not an unprimeable number, because it can be changed into a prime (12872303) 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 as a sum of consecutive naturals, namely, 3218075 + ... + 3218078.

Almost surely, 2^12872306 is an apocalyptic number.

12872306 is a deficient number, since it is larger than the sum of its proper divisors (6436156).

12872306 is an equidigital number, since it uses as much as digits as its factorization.

12872306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436155.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12872306 is about 3587.7996042143. The cubic root of 12872306 is about 234.3610589871.

The spelling of 12872306 in words is "twelve million, eight hundred seventy-two thousand, three hundred six".