28817069 has 2 divisors, whose sum is σ = 28817070. Its totient is φ = 28817068.

The previous prime is 28817003. The next prime is 28817077. The reversal of 28817069 is 96071882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 2418025 = 5138^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28817069 is a prime.

It is a super-2 number, since 2×28817069² = 1660846931501522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28817099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408534 + 14408535.

It is an arithmetic number, because the mean of its divisors is an integer number (14408535).

Almost surely, 2^28817069 is an apocalyptic number.

It is an amenable number.

28817069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28817069 is an equidigital number, since it uses as much as digits as its factorization.

28817069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28817069 is about 5368.1532206151. The cubic root of 28817069 is about 306.5843171818.

The spelling of 28817069 in words is "twenty-eight million, eight hundred seventeen thousand, sixty-nine".