21420748800

Names of 21420748800

• Cardinal: 21420748800 can be written as Twenty-one billion, four hundred twenty million, seven hundred forty-eight thousand, eight hundred.

Scientific notation

• Scientific notation: 2.14207488 × 10¹⁰

Factors of 21420748800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 2134

Divisors of 21420748800

• Number of divisors d(n): 468
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 25 30 32 33 36 40 44 45 48 50 55 60 64 66 72 75 80 88 90 96 99 100 110 120 128 132 144 150 160 165 176 180 192 198 200 220 225 240 256 264 275 288 300 320 330 352 360 384 396 400 440 450 480 495 512 528 550 576 600 640 660 704 720 768 792 800 825 880 900 960 990 1024 1056 1100 1152 1200 1280 1320 1408 1440 1536 1584 1600 1650 1760 1800 1920 1980 2048 2112 2113 2200 2304 2400 2475 2560 2640 2816 2880 3072 3168 3200 3300 3520 3600 3840 3960 4096 4224 4226 4400 4608 4800 4950 5120 5280 5632 5760 6144 6336 6339 6400 6600 7040 7200 7680 7920 8448 8452 8800 9216 9600 9900 10240 10560 10565 11264 11520 12288 12672 12678 12800 13200 14080 14400 15360 15840 16896 16904 17600 18432 19017 19200 19800 20480 21120 21130 22528 23040 23243 25344 25356 25600 26400 28160 28800 30720 31680 31695 33792 33808 35200 36864 38034 38400 39600 42240 42260 45056 46080 46486 50688 50712 51200 52800 52825 56320 57600 61440 63360 63390 67584 67616 69729 70400 76068 76800 79200 84480 84520 92160 92972 95085 101376 101424 102400 105600 105650 112640 115200 116215 126720 126780 135168 135232 139458 140800 152136 153600 158400 158475 168960 169040 184320 185944 190170 202752 202848 209187 211200 211300 225280 230400 232430 253440 253560 270464 278916 281600 304272 307200 316800 316950 337920 338080 348645 371888 380340 405504 405696 418374 422400 422600 460800 464860 475425 506880 507120 540928 557832 563200 581075 608544 633600 633900 675840 676160 697290 743776 760680 811392 836748 844800 845200 921600 929720 950850 1013760 1014240 1045935 1081856 1115664 1126400 1162150 1217088 1267200 1267800 1352320 1394580 1487552 1521360 1622784 1673496 1689600 1690400 1743225 1859440 1901700 2027520 2028480 2091870 2163712 2231328 2324300 2434176 2534400 2535600 2704640 2789160 2975104 3042720 3245568 3346992 3379200 3380800 3486450 3718880 3803400 4056960 4183740 4327424 4462656 4648600 4868352 5068800 5071200 5229675 5409280 5578320 5950208 6085440 6491136 6693984 6761600 6972900 7437760 7606800 8113920 8367480 8654848 8925312 9297200 9736704 10137600 10142400 10459350 10818560 11156640 11900416 12170880 12982272 13387968 13523200 13945800 14875520 15213600 16227840 16734960 17850624 18594400 19473408 20284800 20918700 21637120 22313280 23800832 24341760 25964544 26775936 27046400 27891600 29751040 30427200 32455680 33469920 35701248 37188800 38946816 40569600 41837400 43274240 44626560 47601664 48683520 53551872 54092800 55783200 59502080 60854400 64911360 66939840 71402496 74377600 77893632 81139200 83674800 89253120 95203328 97367040 107103744 108185600 111566400 119004160 121708800 129822720 133879680 142804992 148755200 162278400 167349600 178506240 194734080 214207488 216371200 223132800 238008320 243417600 267759360 285609984 297510400 324556800 334699200 357012480 389468160 428414976 446265600 476016640 486835200 535518720 595020800 649113600 669398400 714024960 856829952 892531200 973670400 1071037440 1190041600 1338796800 1428049920 1785062400 1947340800 2142074880 2380083200 2677593600 3570124800 4284149760 5355187200 7140249600 10710374400 21420748800
• Sum of all divisors σ(n): 83739083064
• Sum of proper divisors (its aliquot sum) s(n): 62318334264
• 21420748800 is an abundant number, because the sum of its proper divisors (62318334264) is greater than itself. Its abundance is 40897585464

Bases of 21420748800

• Binary: 10011111100110001101011000000000000₂
• Hexadecimal: 0x4FCC6B000
• Base-36: 9U9CZK0

Squares and roots of 21420748800

• 21420748800 squared (21420748800²) is 458848479152701440000
• 21420748800 cubed (21420748800³) is 9828878009192054387638272000000
• The square root of 21420748800 is 146358.2891400415
• The cube root of 21420748800 is 2777.2280912431

Scales and comparisons

• 21,420,748,800 seconds is equal to 681 years, 5 weeks, 6 days, 8 hours.
• To count from 1 to 21,420,748,800 would take you about one thousand, three hundred sixty-two 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 21420748800 cubic inches would be around 231.4 feet tall.

Recreational maths with 21420748800

• 21420748800 backwards is 00884702412
• 21420748800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21420748800's digits is 36
• More coming soon!