none because you are counting
3.5 million = 3500000 so 7 Seven digits (individually). Three digits (not counting repeats).
The number 118.6 million in digits is written as 118,600,000.
Expressed in digits, this is equal to 1,002,003.
Expressed in digits, this is written 6600000.
Three million is written in digits as 3,000,000. The number consists of a 3 followed by six zeros, representing the millions place.
In words, you'd write it as one hundred and five million. You'd write the number as 105,000,000. A number in the hundreds has 3 digits, a number in the thousands has 4-6 digits, and a number in the millions has 7-9 digits. A written out number with the word million after it denotes that six zeros would follow behind that number, as such: 105,000,000. If a written out number had the word thousand after it, that would mean that number should be followed by 3 zeros: i.e. 25,000.
250 million = 250,000,000. There are 9 digits in this number.
As a number, thirty two million two hundred and fifteen is written 32000215.
The number 35920 has five digits. You can determine the number of digits in a number by counting each individual digit from left to right. In this case, the digits are 3, 5, 9, 2, and 0.
200,000,000 9 digits.
7 = digits in a telephone number (not counting the area code)
No, counting numbers you can ignore or say they have an infinate number of significant digits. By counting numbers I mean things you count, or non measurements, or numbers you wouldn't round to significant digits anyway . Measurements always have significant digits.