190267

Appears in sequences

• Centered icosahedral (or cuboctahedral) numbers, also crystal ball sequence for f.c.c. lattice.at n=38A005902
• Numbers n such that phi(n-1) + phi(n+1) = phi(2n).at n=27A067701
• Numbers with three distinct prime factors (each of which may or may not be repeated) which when concatenated in any order form a prime number.at n=12A181559