21782178

Appears in sequences

• Numbers k such that 4*k = (k written backwards), k > 0.at n=4A008918
• Numbers k such that k written backwards is a nontrivial multiple of k.at n=10A008919
• Non-palindromic numbers n, not divisible by 10, such that either n divides R(n) or R(n) divides n, where R(n) is the digit-reversal of n.at n=18A071685
• Numbers n such that two applications of 'Reverse and Subtract' lead to n, whereas one application does not lead to n.at n=8A072141