28836886289 has 2 divisors, whose sum is σ = 28836886290. Its totient is φ = 28836886288.

The previous prime is 28836886261. The next prime is 28836886291. The reversal of 28836886289 is 98268863882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23357925889 + 5478960400 = 152833^2 + 74020^2 .

It is a cyclic number.

It is not a de Polignac number, because 28836886289 - 2²⁰ = 28835837713 is a prime.

Together with 28836886291, 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 (28836886189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14418443144 + 14418443145.

It is an arithmetic number, because the mean of its divisors is an integer number (14418443145).

Almost surely, 2^28836886289 is an apocalyptic number.

It is an amenable number.

28836886289 is a deficient number, since it is larger than the sum of its proper divisors (1).

28836886289 is an equidigital number, since it uses as much as digits as its factorization.

28836886289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127401984, while the sum is 68.

The spelling of 28836886289 in words is "twenty-eight billion, eight hundred thirty-six million, eight hundred eighty-six thousand, two hundred eighty-nine".