28684936472273 has 2 divisors, whose sum is σ = 28684936472274. Its totient is φ = 28684936472272.

The previous prime is 28684936472201. The next prime is 28684936472293. The reversal of 28684936472273 is 37227463948682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25570336250944 + 3114600221329 = 5056712^2 + 1764823^2 .

It is a cyclic number.

It is not a de Polignac number, because 28684936472273 - 2³⁰ = 28683862730449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28684936472197 and 28684936472206.

It is not a weakly prime, because it can be changed into another prime (28684936472293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14342468236136 + 14342468236137.

It is an arithmetic number, because the mean of its divisors is an integer number (14342468236137).

Almost surely, 2^{28684936472273} is an apocalyptic number.

It is an amenable number.

28684936472273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28684936472273 is an equidigital number, since it uses as much as digits as its factorization.

28684936472273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1170505728, while the sum is 71.

The spelling of 28684936472273 in words is "twenty-eight trillion, six hundred eighty-four billion, nine hundred thirty-six million, four hundred seventy-two thousand, two hundred seventy-three".