If you look up "-1/12" on Wikipedia page about; 1+2+3+4...=-1/12 it has a mention that: "Bosonic string theory not consistent in dimensions other than 26". But

If you look up "-1/12" on Wikipedia page about; 1+2+3+4...=-1/12 it has a mention that: "Bosonic string theory not consistent in dimensions other than 26". But if you add one dimension for time you get 27. I wonder if there is a relation between all these pointing to the number 27.