What are characteristics of a perfect number?

Is 1gm equal a 1 g? What is the next number 4 3 5 9 12 17? Is a mixed number and mixed numerals the same? What is the price per sq ft for Firestone app 180? How much was a penny worth in the 16th century? Which is warmer -30 degrees celsius or -30 degrees Fahrenheit? How do you write 630 as a product of prime factors? What is 609634 rounded to the nearest 10000? What percent is 22 out of 231? How many minutes are in 7 days? How many square meters in one acre of land? If a map scale shows that one inch equals 400 miles how many miles would 2 and a half inches equal? What is a decimal number that is equivalent to 330 1000? How much does a room service delivery personnel in a hotel make per hour? 14.0067 is round to the nearest whole number? What do altitudes mean? Is 1800g greater 10kg? What can you make with 1000 board feet of wood? What is 9.93 rounded to the nearest whole number? What is better 500 inches or 1 mile?