28544017 has 2 divisors, whose sum is σ = 28544018. Its totient is φ = 28544016.

The previous prime is 28543997. The next prime is 28544039. The reversal of 28544017 is 71044582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 992016 = 5249^2 + 996^2 .

It is a cyclic number.

It is not a de Polignac number, because 28544017 - 2¹⁹ = 28019729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28544017.

It is not a weakly prime, because it can be changed into another prime (28544617) 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 as a sum of consecutive naturals, namely, 14272008 + 14272009.

It is an arithmetic number, because the mean of its divisors is an integer number (14272009).

Almost surely, 2^28544017 is an apocalyptic number.

It is an amenable number.

28544017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28544017 is an equidigital number, since it uses as much as digits as its factorization.

28544017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 28544017 is about 5342.6601052285. The cubic root of 28544017 is about 305.6129106560.

Adding to 28544017 its reverse (71044582), we get a palindrome (99588599).

The spelling of 28544017 in words is "twenty-eight million, five hundred forty-four thousand, seventeen".