21218992000

Names of 21218992000

• Cardinal: 21218992000 can be written as Twenty-one billion, two hundred eighteen million, nine hundred ninety-two thousand.

Scientific notation

• Scientific notation: 2.1218992 × 10¹⁰

Factors of 21218992000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 636

Divisors of 21218992000

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 25 32 34 40 50 64 68 80 85 100 125 128 136 160 170 181 200 250 272 320 340 362 400 425 431 500 544 640 680 724 800 850 862 905 1000 1088 1360 1448 1600 1700 1724 1810 2000 2125 2155 2176 2720 2896 3077 3200 3400 3448 3620 4000 4250 4310 4525 5440 5792 6154 6800 6896 7240 7327 8000 8500 8620 9050 10775 10880 11584 12308 13600 13792 14480 14654 15385 16000 17000 17240 18100 21550 22625 23168 24616 27200 27584 28960 29308 30770 34000 34480 36200 36635 43100 45250 49232 53875 54400 55168 57920 58616 61540 68000 68960 72400 73270 76925 78011 86200 90500 98464 107750 115840 117232 123080 136000 137920 144800 146540 153850 156022 172400 181000 183175 196928 215500 234464 246160 272000 275840 289600 293080 307700 312044 344800 362000 366350 384625 390055 393856 431000 468928 492320 579200 586160 615400 624088 689600 724000 732700 769250 780110 862000 915875 937856 984640 1172320 1230800 1248176 1326187 1379200 1448000 1465400 1538500 1560220 1724000 1831750 1950275 1969280 2344640 2461600 2496352 2652374 2896000 2930800 3077000 3120440 3448000 3663500 3900550 4689280 4923200 4992704 5304748 5861600 6154000 6240880 6630935 6896000 7327000 7801100 9751375 9846400 9985408 10609496 11723200 12308000 12481760 13261870 14654000 15602200 19502750 21218992 23446400 24616000 24963520 26523740 29308000 31204400 33154675 39005500 42437984 49232000 49927040 53047480 58616000 62408800 66309350 78011000 84875968 106094960 117232000 124817600 132618700 156022000 165773375 169751936 212189920 249635200 265237400 312044000 331546750 424379840 530474800 624088000 663093500 848759680 1060949600 1248176000 1326187000 2121899200 2652374000 4243798400 5304748000 10609496000 21218992000
• Sum of all divisors σ(n): 56297928960
• Sum of proper divisors (its aliquot sum) s(n): 35078936960
• 21218992000 is an abundant number, because the sum of its proper divisors (35078936960) is greater than itself. Its abundance is 13859944960

Bases of 21218992000

• Binary: 10011110000110000000001111110000000₂
• Hexadecimal: 0x4F0C01F80
• Base-36: 9QX8N0G

Squares and roots of 21218992000

• 21218992000 squared (21218992000²) is 450245621496064000000
• 21218992000 cubed (21218992000³) is 9553758240560010047488000000000
• The square root of 21218992000 is 145667.4019813631
• The cube root of 21218992000 is 2768.4812276575

Scales and comparisons

• 21,218,992,000 seconds is equal to 674 years, 36 weeks, 2 days, 4 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,218,992,000 would take you about one thousand, three hundred forty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21218992000 cubic inches would be around 230.7 feet tall.

Recreational maths with 21218992000

• 21218992000 backwards is 00029981212
• 21218992000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21218992000's digits is 34
• More coming soon!