1672125

Appears in sequences

• Numbers k such that phi(k)=p^2, where p is product of digits of k.at n=33A153427
• Integer areas of the Lucas Central triangles of integer-sided triangles.at n=30A231739
• Numbers n such that rad(sigma(n)) = 2*rad(n), where the "radical" of n, rad(n), is A007947 and sigma(n) is the sum of the divisors of n.at n=5A238330
• Numbers m such that there are at least two smaller numbers k < m with the same harmonic mean of divisors as m.at n=4A348697