12028223 has 4 divisors (see below), whose sum is σ = 12039240. Its totient is φ = 12017208.

The previous prime is 12028213. The next prime is 12028249. The reversal of 12028223 is 32282021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12028223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12028195 and 12028204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (3009810).

Almost surely, 2^12028223 is an apocalyptic number.

12028223 is a deficient number, since it is larger than the sum of its proper divisors (11017).

12028223 is an equidigital number, since it uses as much as digits as its factorization.

12028223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12028223 is about 3468.1728618972. The cubic root of 12028223 is about 229.1221928168.

The spelling of 12028223 in words is "twelve million, twenty-eight thousand, two hundred twenty-three".