232470

Appears in sequences

• Unitary harmonic numbers (those for which the unitary harmonic mean is an integer).at n=30A006086
• Infinitary harmonic numbers: harmonic mean of infinitary divisors is an integer.at n=24A063947
• Tri-unitary harmonic numbers: numbers k such that the harmonic mean of the tri-unitary divisors of k is an integer.at n=25A335387