28834423817 has 2 divisors, whose sum is σ = 28834423818. Its totient is φ = 28834423816.

The previous prime is 28834423771. The next prime is 28834423819. The reversal of 28834423817 is 71832443882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28508296336 + 326127481 = 168844^2 + 18059^2 .

It is a cyclic number.

It is not a de Polignac number, because 28834423817 - 2⁶ = 28834423753 is a prime.

Together with 28834423819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28834423819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14417211908 + 14417211909.

It is an arithmetic number, because the mean of its divisors is an integer number (14417211909).

Almost surely, 2^28834423817 is an apocalyptic number.

It is an amenable number.

28834423817 is a deficient number, since it is larger than the sum of its proper divisors (1).

28834423817 is an equidigital number, since it uses as much as digits as its factorization.

28834423817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 50.

The spelling of 28834423817 in words is "twenty-eight billion, eight hundred thirty-four million, four hundred twenty-three thousand, eight hundred seventeen".