19965000000
domain: N
Appears in sequences
- List of all numbers n such that n is equal to the number of 7's in the decimal digits of all numbers <= n.at n=12A130429
- Numbers k such that the number of times digit 'm' used for writing the decimal representation of the numbers from 1 to k is equal to k for more than one value of m in the range m = 1 to 9.at n=11A216399