28828365289 has 2 divisors, whose sum is σ = 28828365290. Its totient is φ = 28828365288.

The previous prime is 28828365287. The next prime is 28828365311. The reversal of 28828365289 is 98256382882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18634434064 + 10193931225 = 136508^2 + 100965^2 .

It is a cyclic number.

It is not a de Polignac number, because 28828365289 - 2¹ = 28828365287 is a prime.

Together with 28828365287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28828365287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414182644 + 14414182645.

It is an arithmetic number, because the mean of its divisors is an integer number (14414182645).

Almost surely, 2^28828365289 is an apocalyptic number.

It is an amenable number.

28828365289 is a deficient number, since it is larger than the sum of its proper divisors (1).

28828365289 is an equidigital number, since it uses as much as digits as its factorization.

28828365289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26542080, while the sum is 61.

The spelling of 28828365289 in words is "twenty-eight billion, eight hundred twenty-eight million, three hundred sixty-five thousand, two hundred eighty-nine".