21246991920

Names of 21246991920

• Cardinal: 21246991920 can be written as Twenty-one billion, two hundred forty-six million, nine hundred ninety-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.124699192 × 10¹⁰

Factors of 21246991920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1114

Divisors of 21246991920

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 18 20 21 22 24 28 30 33 35 36 40 42 44 45 48 49 53 55 56 60 63 66 70 72 77 80 84 88 90 98 99 105 106 110 112 120 126 132 140 144 147 154 159 165 168 176 180 196 198 210 212 220 231 240 245 252 264 265 280 294 308 315 318 330 336 360 371 385 392 396 420 424 440 441 462 477 490 495 504 528 530 539 560 583 588 616 630 636 660 693 720 735 742 770 784 792 795 840 848 880 882 924 954 980 990 1008 1033 1060 1078 1113 1155 1166 1176 1232 1260 1272 1320 1386 1470 1484 1540 1584 1590 1617 1680 1749 1764 1848 1855 1908 1960 1980 2066 2120 2156 2205 2226 2310 2332 2352 2385 2520 2544 2597 2640 2695 2772 2915 2940 2968 3080 3099 3180 3234 3339 3465 3498 3528 3696 3710 3816 3920 3960 4081 4132 4240 4312 4410 4452 4620 4664 4770 4851 5040 5165 5194 5247 5390 5544 5565 5830 5880 5936 6160 6198 6360 6468 6678 6930 6996 7056 7231 7420 7632 7791 7920 8085 8162 8264 8624 8745 8820 8904 9240 9297 9328 9540 9702 10330 10388 10494 10780 11088 11130 11363 11660 11760 12243 12396 12720 12936 12985 13356 13860 13992 14462 14840 15495 15582 16170 16324 16528 16695 17490 17640 17808 18480 18594 19080 19404 20405 20660 20776 20988 21560 21693 22260 22726 23320 23373 24255 24486 24792 25872 25970 26235 26712 27720 27984 28567 28924 29680 30990 31164 32340 32648 33390 34089 34980 35280 36155 36729 37188 38160 38808 38955 40810 41320 41552 41976 43120 43386 44520 45452 46485 46640 46746 48510 48972 49584 50617 51940 52470 53424 54749 55440 56815 57134 57848 61215 61980 62328 64680 65079 65296 66780 68178 69960 72310 73458 74376 77616 77910 79541 81620 82640 83952 85701 86772 89040 90904 92970 93492 97020 97944 101234 102267 103880 104940 108465 109498 113630 114268 115696 116865 122430 123960 124656 129360 130158 133560 136356 139920 142835 144620 146916 148752 151851 155820 159082 163240 164247 170445 171402 173544 181808 183645 185940 186984 194040 195888 202468 204534 207760 209880 216930 218996 227260 228536 233730 238623 244860 247920 253085 257103 260316 267120 272712 273745 285670 289240 293832 303702 311640 318164 325395 326480 328494 340890 342804 347088 367290 371880 373968 383243 388080 397705 404936 409068 419760 428505 433860 437992 454520 455553 457072 467460 477246 489720 492741 506170 511335 514206 520632 545424 547490 556787 571340 578480 587664 602239 607404 623280 636328 650790 656988 681780 685608 715869 734580 743760 759255 766486 795410 809872 818136 821235 857010 867720 875984 909040 911106 934920 954492 979440 985482 1012340 1022670 1028412 1041264 1094980 1113574 1142680 1149729 1193115 1204478 1214808 1272656 1285515 1301580 1313976 1363560 1371216 1431738 1469160 1518510 1532972 1590820 1636272 1642470 1670361 1714020 1735440 1806717 1822212 1869840 1908984 1916215 1970964 2024680 2045340 2056824 2189960 2227148 2277765 2285360 2299458 2386230 2408956 2429616 2463705 2571030 2603160 2627952 2682701 2727120 2783935 2863476 2938320 3011195 3037020 3065944 3181640 3284940 3340722 3428040 3449187 3579345 3613434 3644424 3817968 3832430 3941928 4049360 4090680 4113648 4215673 4379920 4454296 4555530 4598916 4772460 4817912 4927410 5011083 5142060 5206320 5365402 5420151 5567870 5726952 5748645 6022390 6074040 6131888 6363280 6569880 6681444 6856080 6898374 7158690 7226868 7288848 7664860 7883856 8048103 8181360 8351805 8431346 8908592 9033585 9111060 9197832 9544920 9635824 9854820 10022166 10284120 10730804 10840302 11135740 11453904 11497290 12044780 12148080 12647019 13139760 13362888 13413505 13796748 14317380 14453736 15329720 16096206 16703610 16862692 17245935 18067170 18222120 18395664 19089840 19709640 20044332 20568240 21078365 21461608 21680604 22271480 22994580 24089560 24144309 25055415 25294038 26725776 26827010 27100755 27593496 28634760 28907472 29509711 30659440 32192412 33407220 33725384 34491870 36134340 36444240 37941057 39419280 40088664 40240515 42156730 42923216 43361208 44542960 45989160 48179120 48288618 50110830 50588076 53654020 54201510 55186992 57269520 59019422 63235095 64384824 66814440 67450768 68983740 72268680 75882114 80177328 80481030 84313460 86722416 88529133 91978320 96577236 100221660 101176152 107308040 108403020 118038844 120721545 126470190 128769648 133628880 137967480 144537360 147548555 151764228 160962060 168626920 177058266 189705285 193154472 200443320 202352304 214616080 216806040 236077688 241443090 252940380 265587399 275934960 295097110 303528456 321924120 337253840 354116532 379410570 386308944 400886640 433612080 442645665 472155376 482886180 505880760 531174798 590194220 607056912 643848240 708233064 758821140 885291330 965772360 1011761520 1062349596 1180388440 1327936995 1416466128 1517642280 1770582660 1931544720 2124699192 2360776880 2655873990 3035284560 3541165320 4249398384 5311747980 7082330640 10623495960 21246991920
• Sum of all divisors σ(n): 92347830432
• Sum of proper divisors (its aliquot sum) s(n): 71100838512
• 21246991920 is an abundant number, because the sum of its proper divisors (71100838512) is greater than itself. Its abundance is 49853846592

Bases of 21246991920

• Binary: 10011110010011010110101111000110000₂
• Hexadecimal: 0x4F26B5E30
• Base-36: 9RDWRW0

Squares and roots of 21246991920

• 21246991920 squared (21246991920²) is 451434665648545286400
• 21246991920 cubed (21246991920³) is 9591628693442543259894885888000
• The square root of 21246991920 is 145763.4793766945
• The cube root of 21246991920 is 2769.6984262473

Scales and comparisons

• 21,246,991,920 seconds is equal to 675 years, 30 weeks, 4 days, 6 hours, 12 minutes.
• To count from 1 to 21,246,991,920 would take you about one thousand, three hundred fifty-one 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 21246991920 cubic inches would be around 230.8 feet tall.

Recreational maths with 21246991920

• 21246991920 backwards is 02919964212
• 21246991920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21246991920's digits is 45
• More coming soon!