12028209 has 8 divisors (see below), whose sum is σ = 16087392. Its totient is φ = 7993920.

The previous prime is 12028201. The next prime is 12028213. The reversal of 12028209 is 90282021.

12028209 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12028209 - 2³ = 12028201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12028201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5064 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (2010924).

Almost surely, 2^12028209 is an apocalyptic number.

It is an amenable number.

12028209 is a deficient number, since it is larger than the sum of its proper divisors (4059183).

12028209 is a wasteful number, since it uses less digits than its factorization.

12028209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12447.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 12028209 is about 3468.1708435427. The cubic root of 12028209 is about 229.1221039228.

The spelling of 12028209 in words is "twelve million, twenty-eight thousand, two hundred nine".