12748223 has 4 divisors (see below), whose sum is σ = 13159488. Its totient is φ = 12336960.

The previous prime is 12748217. The next prime is 12748231. The reversal of 12748223 is 32284721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32284721 = 7 ⋅4612103.

It is a cyclic number.

It is not a de Polignac number, because 12748223 - 2⁸ = 12747967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12748123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205586 + ... + 205647.

It is an arithmetic number, because the mean of its divisors is an integer number (3289872).

Almost surely, 2^12748223 is an apocalyptic number.

12748223 is a deficient number, since it is larger than the sum of its proper divisors (411265).

12748223 is an equidigital number, since it uses as much as digits as its factorization.

12748223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411264.

The product of its digits is 5376, while the sum is 29.

The square root of 12748223 is about 3570.4653758299. The cubic root of 12748223 is about 233.6055826741.

The spelling of 12748223 in words is "twelve million, seven hundred forty-eight thousand, two hundred twenty-three".