There are 5460 five digit numbers with a digit sum of 22.
No. 26 for instance the sum of the digits is 8 but not divisible by 4. 32 the sum of the digits is 5 but divisible by 4 The rules for some other numbers are 2 all even numbers are divisible by 2 3 The sum of the digits is divisible by 3 4 The last 2 numbers are divisible by 4 5 The number ends in a 0 or 5 6 The sum of the digits is divisible by 3 and is even 7 no easy method 8 The last 3 numbers are divisible by 8 9 The sum of the digits is divisible by 9
14, 32, and 50
Zero.
10
41
Two integers.
The sum of your digits is the total number arrived at after adding two or more numbers.
Two of them.
(9,999) + (9,999) = 19,998 So it looks like the sum of two 4-digit numbers can't have more than 5 digits.
Armstrong numbers are the sum of their own digits to the power of the number of digits.
002+002+001=005