700000000

Appears in sequences

• a(3n)=10^n. a(3n+1)=4*10^n. a(3n+2)=7*10^n.at n=26A135262
• Numbers k such that k and k^2 use only the digits 0, 4, 7 and 9.at n=37A136960
• a(n) = the smallest number ending in n+1 zeros divisible by n.at n=6A173484
• a(n) = the smallest (n+2)-digit number ending in n+1 zeros that is divisible by n, else 0.at n=6A173485
• a(n) = the largest (n+2)-digit number ending in n+1 zeros that is divisible by n, else 0.at n=6A173486
• Expansion of g.f. (1-3*x)/(1-10*x).at n=9A196662