28244017 has 2 divisors, whose sum is σ = 28244018. Its totient is φ = 28244016.

The previous prime is 28243973. The next prime is 28244033. The reversal of 28244017 is 71044282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 10342656 = 4231^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 28244017 - 2¹⁹ = 27719729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28244717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14122008 + 14122009.

It is an arithmetic number, because the mean of its divisors is an integer number (14122009).

Almost surely, 2^28244017 is an apocalyptic number.

It is an amenable number.

28244017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28244017 is an equidigital number, since it uses as much as digits as its factorization.

28244017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28244017 is about 5314.5100432683. The cubic root of 28244017 is about 304.5384652520.

Adding to 28244017 its reverse (71044282), we get a palindrome (99288299).

The spelling of 28244017 in words is "twenty-eight million, two hundred forty-four thousand, seventeen".