227744

Appears in sequences

• Composite numbers whose sum of proper divisors is a power of 2.at n=23A279731
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -1, a(1) = 2, a(2) = 3, a(3) = 4.at n=24A295721
• Numbers k such that both k and k+1 are bi-unitary abundant numbers.at n=12A318167
• Nonprime numbers whose sum of proper divisors is a power of 4.at n=14A383872