43064

Appears in sequences

• Numbers k such that both k and k+1 are abundant.at n=9A096399
• Numbers k such that both sigma(k) >= 2*k-1 and sigma(k+1) >= 2*(k+1)-1.at n=11A103289
• Numbers k such that both k and k+1 are bi-unitary abundant numbers.at n=2A318167
• Numbers k such that both k and k+1 are infinitary abundant numbers (A129656).at n=2A327635
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=7A328327
• Numbers k such that k and k+1 both have an odd number of abundant divisors.at n=4A381548