12028229 has 4 divisors (see below), whose sum is σ = 12089484. Its totient is φ = 11966976.

The previous prime is 12028213. The next prime is 12028249. The reversal of 12028229 is 92282021.

12028229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11404129 + 624100 = 3377^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12028229 - 2⁴ = 12028213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12028198 and 12028207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028249) 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, 30332 + ... + 30725.

It is an arithmetic number, because the mean of its divisors is an integer number (3022371).

Almost surely, 2^12028229 is an apocalyptic number.

It is an amenable number.

12028229 is a deficient number, since it is larger than the sum of its proper divisors (61255).

12028229 is an equidigital number, since it uses as much as digits as its factorization.

12028229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61254.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12028229 is about 3468.1737269058. The cubic root of 12028229 is about 229.1222309142.

The spelling of 12028229 in words is "twelve million, twenty-eight thousand, two hundred twenty-nine".