21049118720

Names of 21049118720

• Cardinal: 21049118720 can be written as Twenty-one billion, forty-nine million, one hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.104911872 × 10¹⁰

Factors of 21049118720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 187

Divisors of 21049118720

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 56 58 61 64 70 80 83 112 116 122 128 140 145 160 166 203 224 232 244 256 280 290 305 320 332 406 415 427 448 464 488 512 560 580 581 610 640 664 812 830 854 896 928 976 1015 1024 1120 1160 1162 1220 1280 1328 1624 1660 1708 1769 1792 1856 1952 2030 2048 2135 2240 2320 2324 2407 2440 2560 2656 2905 3248 3320 3416 3538 3584 3712 3904 4060 4096 4270 4480 4640 4648 4814 4880 5063 5120 5312 5810 6496 6640 6832 7076 7168 7424 7808 8120 8540 8845 8960 9280 9296 9628 9760 10126 10240 10624 11620 12035 12383 12992 13280 13664 14152 14336 14848 15616 16240 16849 17080 17690 17920 18560 18592 19256 19520 20252 20480 21248 23240 24070 24766 25315 25984 26560 27328 28304 28672 29696 31232 32480 33698 34160 35380 35441 35840 37120 37184 38512 39040 40504 42496 46480 48140 49532 50630 51968 53120 54656 56608 59392 61915 62464 64960 67396 68320 70760 70882 71680 74240 74368 77024 78080 81008 84245 84992 92960 96280 99064 101260 103936 106240 109312 113216 118784 123830 124928 129920 134792 136640 141520 141764 143360 146827 148480 148736 154048 156160 162016 168490 169984 177205 185920 192560 198128 202520 207872 212480 218624 226432 247660 249856 259840 269584 273280 283040 283528 293654 296960 297472 308096 312320 324032 336980 339968 354410 371840 385120 396256 405040 415744 424960 437248 452864 495320 519680 539168 546560 566080 567056 587308 593920 594944 616192 624640 648064 673960 708820 734135 743680 770240 792512 810080 831488 849920 874496 905728 990640 1027789 1039360 1078336 1093120 1132160 1134112 1174616 1189888 1232384 1249280 1296128 1347920 1417640 1468270 1487360 1540480 1585024 1620160 1699840 1748992 1811456 1981280 2055578 2078720 2156672 2186240 2264320 2268224 2349232 2379776 2464768 2592256 2695840 2835280 2936540 2974720 3080960 3170048 3240320 3622912 3962560 4111156 4157440 4313344 4372480 4528640 4536448 4698464 4929536 5138945 5184512 5391680 5670560 5873080 5949440 6161920 6340096 6480640 7245824 7925120 8222312 8626688 8744960 9057280 9072896 9396928 9859072 10277890 10369024 10783360 11341120 11746160 11898880 12323840 12680192 12961280 15850240 16444624 17253376 18114560 18145792 18793856 20555780 20738048 21566720 22682240 23492320 24647680 25360384 25922560 31700480 32889248 34506752 36229120 36291584 37587712 41111560 43133440 45364480 46984640 49295360 50720768 51845120 63400960 65778496 69013504 72583168 75175424 82223120 86266880 90728960 93969280 103690240 126801920 131556992 145166336 150350848 164446240 172533760 181457920 187938560 253603840 263113984 300701696 328892480 345067520 362915840 375877120 526227968 601403392 657784960 725831680 751754240 1052455936 1315569920 1503508480 2104911872 2631139840 3007016960 4209823744 5262279680 10524559360 21049118720
• Sum of all divisors σ(n): 61428568320
• Sum of proper divisors (its aliquot sum) s(n): 40379449600
• 21049118720 is an abundant number, because the sum of its proper divisors (40379449600) is greater than itself. Its abundance is 19330330880

Bases of 21049118720

• Binary: 10011100110101000000001000000000000₂
• Hexadecimal: 0x4E6A01000
• Base-36: 9O43NY8

Squares and roots of 21049118720

• 21049118720 squared (21049118720²) is 443065398888654438400
• 21049118720 cubed (21049118720³) is 9326136181931443334936526848000
• The square root of 21049118720 is 145083.1441622355
• The cube root of 21049118720 is 2761.0735304351

Scales and comparisons

• 21,049,118,720 seconds is equal to 669 years, 15 weeks, 3 days, 1 hour, 25 minutes, 20 seconds.
• To count from 1 to 21,049,118,720 would take you about one thousand, three hundred thirty-eight 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 21049118720 cubic inches would be around 230.1 feet tall.

Recreational maths with 21049118720

• 21049118720 backwards is 02781194012
• 21049118720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21049118720's digits is 35
• More coming soon!