87824421125domain: NAppears in sequencesKaprekar triples: q^3 = x*10^2n + y*10^n + z, with q = x + y + z and 10^n > q > 10^(n-1) (q = 1 allowed for n = 1).at n=6A291461Cubes of the form N^3 = concat(a,b,c) with N = a+b+c; a, b, c > 0.at n=3A328200