21818995380

Names of 21818995380

• Cardinal: 21818995380 can be written as Twenty-one billion, eight hundred eighteen million, nine hundred ninety-five thousand, three hundred eighty.

Scientific notation

• Scientific notation: 2.181899538 × 10¹⁰

Factors of 21818995380

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 630

Divisors of 21818995380

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 27 28 30 35 36 39 42 45 49 52 54 60 63 65 70 78 84 90 91 98 105 108 117 126 130 135 137 140 147 156 180 182 189 195 196 210 234 245 252 260 270 273 274 294 315 351 364 378 390 411 420 441 455 463 468 490 540 546 548 585 588 630 637 685 702 735 756 780 819 822 882 910 926 945 959 980 1092 1170 1233 1260 1274 1323 1365 1370 1389 1404 1470 1638 1644 1755 1764 1781 1820 1852 1890 1911 1918 2055 2205 2315 2340 2457 2466 2548 2646 2730 2740 2778 2877 2940 3185 3241 3276 3510 3562 3699 3780 3822 3836 4095 4110 4167 4410 4630 4795 4914 4932 5292 5343 5460 5556 5733 5754 6019 6165 6370 6482 6615 6713 6945 7020 7124 7398 7644 8190 8220 8334 8631 8820 8905 9260 9555 9590 9723 9828 10686 11466 11508 12038 12285 12330 12467 12501 12740 12964 13230 13426 13890 14385 14796 16029 16205 16380 16668 17199 17262 17810 18057 18495 19110 19180 19446 20139 20835 21372 22687 22932 24076 24570 24660 24934 25002 25893 26460 26715 26852 27780 28665 28770 29169 30095 32058 32410 33565 34398 34524 35620 36114 36990 37401 38220 38892 40278 41670 42133 43155 45374 48087 48615 49140 49868 50004 51786 53430 54171 57330 57540 58338 60190 60417 62335 62505 63431 64116 64820 67130 68061 68796 72228 73980 74802 80145 80556 83340 84266 85995 86310 87269 87507 90285 90748 96174 97230 100695 103572 106860 108342 112203 113435 114660 116676 120380 120834 124670 125010 126399 126862 129465 134260 136122 145845 149604 160290 162513 168532 171990 172620 174538 175014 180570 181251 187005 190293 192348 194460 201390 204183 210665 216684 224406 226870 240435 241668 249340 250020 252798 253724 258930 261807 270855 272244 291690 294931 302085 317155 320580 325026 336609 340305 343980 349076 350028 361140 362502 374010 379197 380586 402780 408366 421330 436345 437535 444017 448812 453740 480870 505596 517860 523614 541710 561015 570879 583380 589862 604170 612549 631995 634310 650052 673218 680610 725004 748020 758394 761172 785421 812565 816732 824603 842660 872690 875070 884793 888034 906255 951465 961740 1020915 1047228 1083420 1122030 1137591 1141758 1179724 1208340 1225098 1263990 1268620 1309035 1332051 1346436 1361220 1474655 1516788 1570842 1625130 1649206 1683045 1712637 1745380 1750140 1769586 1776068 1812510 1895985 1902930 2041830 2220085 2244060 2275182 2283516 2356263 2450196 2473809 2527980 2618070 2654379 2664102 2854395 2949310 3062745 3108119 3141684 3250260 3298412 3366090 3425274 3539172 3625020 3791970 3805860 3927105 3996153 4083660 4123015 4423965 4440170 4550364 4712526 4947618 5236140 5308758 5328204 5687955 5708790 5772221 5898620 6125490 6216238 6660255 6732180 6850548 7421427 7583940 7854210 7963137 7992306 8246030 8563185 8847930 8880340 9324357 9425052 9895236 10617516 11375910 11417580 11544442 11781315 11988459 12250980 12369045 12432476 13271895 13320510 14842854 15540595 15708420 15926274 15984612 16492060 17126370 17316663 17695860 18648714 19980765 22264281 22751820 23088884 23562630 23976918 24738090 26543790 26641020 27973071 28861105 29685708 31081190 31852548 34252740 34633326 37107135 37297428 39815685 39961530 40405547 44528562 46621785 47125260 47953836 49476180 51949989 53087580 55946142 57722210 59942295 62162380 69266652 74214270 79631370 79923060 80811094 83919213 86583315 89057124 93243570 103899978 111321405 111892284 115444420 119884590 121216641 139865355 148428540 155849967 159262740 161622188 167838426 173166630 186487140 202027735 207799956 222642810 239769180 242433282 259749945 279730710 311699934 335676852 346333260 363649923 404055470 419596065 445285620 484866564 519499890 559461420 606083205 623399868 727299846 779249835 808110940 839192130 1038999780 1090949769 1212166410 1454599692 1558499670 1678384260 1818249615 2181899538 2424332820 3116999340 3636499230 4363799076 5454748845 7272998460 10909497690 21818995380
• Sum of all divisors σ(n): 85843860480
• Sum of proper divisors (its aliquot sum) s(n): 64024865100
• 21818995380 is an abundant number, because the sum of its proper divisors (64024865100) is greater than itself. Its abundance is 42205869720

Bases of 21818995380

• Binary: 10100010100100000110111001010110100₂
• Hexadecimal: 0x5148372B4
• Base-36: A0UGSL0

Squares and roots of 21818995380

• 21818995380 squared (21818995380²) is 476068559392461344400
• 21818995380 cubed (21818995380³) is 10387337697947369680292188872000
• The square root of 21818995380 is 147712.5430693007
• The cube root of 21818995380 is 2794.3335821555

Scales and comparisons

• 21,818,995,380 seconds is equal to 693 years, 40 weeks, 2 days, 16 hours, 3 minutes.
• To count from 1 to 21,818,995,380 would take you about one thousand, three hundred eighty-seven 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 21818995380 cubic inches would be around 232.9 feet tall.

Recreational maths with 21818995380

• 21818995380 backwards is 08359981812
• 21818995380 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21818995380's digits is 54
• More coming soon!