What is the sum of all positive 1-digit integers that 4221462 is divisible by?

Hello,

n=4221462
n is divisible by 1 as any integer.
n ends by 2==>n is divisible by 2

4+2+2+1+4+6+2=21 is a multiple of 3 ==> n is divisible by 3

62 is not n is divisible by 4 and nor n.

n don't end with 0 or 5 ==>n is not divisible by 5

n  is divisible by 2 and n is divisible by 3==n is divisible by 6

divisibility by 7:

1|231|231
4|221|462

(1*2+3*6+2*4 ) mod 7=(2+4+1) mod 7=0
1*4=4                                                                0+4=4

(1*1+3*2+2*2) mod 7= (1+6+4) mod 7= 4

4-4=0 so n is divisible by 7

462 is not divisible by 8; nor n.

4+2+2+1+4+6+2=21 is not divisible by 9, nor n

==>1+2+3+6+7=19

It is 5.8 you add all of the up to equat 180 then solve the equation