12873226 has 4 divisors (see below), whose sum is σ = 19309842. Its totient is φ = 6436612.

The previous prime is 12873197. The next prime is 12873229. The reversal of 12873226 is 62237821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62237821 = 151 ⋅412171.

It can be written as a sum of positive squares in only one way, i.e., 12257001 + 616225 = 3501^2 + 785^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12873229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218305 + ... + 3218308.

Almost surely, 2^12873226 is an apocalyptic number.

12873226 is a deficient number, since it is larger than the sum of its proper divisors (6436616).

12873226 is an equidigital number, since it uses as much as digits as its factorization.

12873226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436615.

The product of its digits is 8064, while the sum is 31.

The square root of 12873226 is about 3587.9278142125. The cubic root of 12873226 is about 234.3666422146.

The spelling of 12873226 in words is "twelve million, eight hundred seventy-three thousand, two hundred twenty-six".