28441117 has 2 divisors, whose sum is σ = 28441118. Its totient is φ = 28441116.

The previous prime is 28441097. The next prime is 28441151. The reversal of 28441117 is 71114482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24068836 + 4372281 = 4906^2 + 2091^2 .

It is a cyclic number.

It is not a de Polignac number, because 28441117 - 2¹⁵ = 28408349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28445117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14220558 + 14220559.

It is an arithmetic number, because the mean of its divisors is an integer number (14220559).

Almost surely, 2^28441117 is an apocalyptic number.

It is an amenable number.

28441117 is a deficient number, since it is larger than the sum of its proper divisors (1).

28441117 is an equidigital number, since it uses as much as digits as its factorization.

28441117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 28.

The square root of 28441117 is about 5333.0213762932. The cubic root of 28441117 is about 305.2452278426.

Adding to 28441117 its reverse (71114482), we get a palindrome (99555599).

The spelling of 28441117 in words is "twenty-eight million, four hundred forty-one thousand, one hundred seventeen".