Q: Is 28,021,000 a Prime Number?
A: No, 28,021,000 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 28021000 can be evenly divided by 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 125 140 175 200 250 280 350 500 700 875 1,000 1,400 1,750 3,500 4,003 7,000 8,006 16,012 20,015 28,021 32,024 40,030 56,042 80,060 100,075 112,084 140,105 160,120 200,150 224,168 280,210 400,300 500,375 560,420 700,525 800,600 1,000,750 1,120,840 1,401,050 2,001,500 2,802,100 3,502,625 4,003,000 5,604,200 7,005,250 14,010,500 and 28,021,000, with no remainder.
Since 28,021,000 cannot be divided by just 1 and 28,021,000, it is not a prime number.
| Number | 28,020,998 | 28,020,999 | 28,021,001 | 28,021,002 |
| Prime? | no | no | yes | no |