12028449 has 4 divisors (see below), whose sum is σ = 16037936. Its totient is φ = 8018964.

The previous prime is 12028447. The next prime is 12028451. The reversal of 12028449 is 94482021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12028447) and next prime (12028451).

It is not a de Polignac number, because 12028449 - 2¹ = 12028447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12028447) 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, 2004739 + ... + 2004744.

It is an arithmetic number, because the mean of its divisors is an integer number (4009484).

Almost surely, 2^12028449 is an apocalyptic number.

It is an amenable number.

12028449 is a deficient number, since it is larger than the sum of its proper divisors (4009487).

12028449 is an equidigital number, since it uses as much as digits as its factorization.

12028449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009486.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12028449 is about 3468.2054437418. The cubic root of 12028449 is about 229.1236278110.

The spelling of 12028449 in words is "twelve million, twenty-eight thousand, four hundred forty-nine".