329967

Appears in sequences

• Kaprekar numbers: positive numbers n such that n = q+r and n^2 = q*10^m+r, for some m >= 1, q >= 0 and 0 <= r < 10^m, with n != 10^a, a >= 1.at n=30A006886
• Kaprekar triples: q such that q = x + y + z and q^3 = x*10^2n + y*10^n + z, where z < 10^n and n is the number of digits in q. q is not a power of 10 (except q=1).at n=24A006887
• Kaprekar numbers: numbers k such that k = q + r and k^2 = q*10^m + r, for some m >= 1, q >= 0 and 0 <= r < 10^m. Here q and r must both have the same number of digits.at n=12A045913
• The full list of 6-Kaprekar numbers.at n=9A053397
• Another version of the Kaprekar numbers (A006886): n such that n = q+r and n^2 = q*10^m+r, for some m >= 1, q >= 0 and 0 <= r < 10^m, with n != 10^a, a >= 1 and n an m-digit number.at n=27A053816
• Erroneous version of A006887.at n=25A060809
• Numbers n such that reversal(n)=(7/3)*n.at n=3A101706
• Numbers whose square is the product of a number and its reverse.at n=30A207373
• Kaprekar numbers, allowing powers of 10: n such that n=q+r and n^2=q*10^m+r, for some m >= 1, q>=0 and 0<=r<10^m.at n=35A248353
• Square roots of terms in A238237.at n=16A290449
• Numbers n such that for every k = 1, 2, ..., A305706(n)-1, it is possible to insert plus signs into the decimal representation of n^k to make sum equal n.at n=71A305707
• Non-palindromes numbers not ending in 0 whose square is the product of a number and its reverse in only one way.at n=17A325151