19997187840

Names of 19997187840

• Cardinal: 19997187840 can be written as Nineteen billion, nine hundred ninety-seven million, one hundred eighty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.999718784 × 10¹⁰

Factors of 19997187840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 212

Divisors of 19997187840

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 43 45 48 56 60 63 64 70 72 73 79 80 84 86 90 96 105 112 120 126 128 129 140 144 146 158 160 168 172 180 192 210 215 219 224 237 240 252 256 258 280 288 292 301 315 316 320 336 344 360 365 384 387 395 420 430 438 448 474 480 504 511 516 553 560 576 584 602 630 632 640 645 657 672 688 711 720 730 768 774 790 840 860 876 896 903 948 960 1008 1022 1032 1095 1106 1120 1152 1168 1185 1204 1260 1264 1280 1290 1314 1344 1376 1422 1440 1460 1505 1533 1548 1580 1659 1680 1720 1752 1792 1806 1896 1920 1935 2016 2044 2064 2190 2212 2240 2304 2336 2370 2408 2520 2528 2555 2580 2628 2688 2709 2752 2765 2844 2880 2920 3010 3066 3096 3139 3160 3285 3318 3360 3397 3440 3504 3555 3612 3792 3840 3870 4032 4088 4128 4380 4424 4480 4515 4599 4672 4740 4816 4977 5040 5056 5110 5160 5256 5376 5418 5504 5530 5688 5760 5767 5840 6020 6132 6192 6278 6320 6570 6636 6720 6794 6880 7008 7110 7224 7584 7665 7740 8064 8176 8256 8295 8760 8848 8960 9030 9198 9344 9417 9480 9632 9954 10080 10112 10191 10220 10320 10512 10836 11008 11060 11376 11520 11534 11680 12040 12264 12384 12556 12640 13140 13272 13440 13545 13588 13760 14016 14220 14448 15168 15330 15480 15695 16128 16352 16512 16590 16985 17301 17520 17696 18060 18396 18688 18834 18960 19264 19908 20160 20224 20382 20440 20640 21024 21672 21973 22120 22752 22995 23068 23360 23779 24080 24528 24768 24885 25112 25280 26280 26544 26880 27090 27176 27520 28032 28251 28440 28835 28896 30336 30573 30660 30960 31390 32704 33024 33180 33970 34602 35040 35392 36120 36792 37668 37920 38528 39816 40320 40369 40764 40880 41280 42048 43344 43946 44240 45504 45990 46136 46720 47085 47558 48160 49056 49536 49770 50224 50560 50955 51903 52560 53088 54180 54352 55040 56064 56502 56880 57670 57792 60672 61146 61320 61920 62780 65408 65919 66360 67940 69204 70080 70784 71337 72240 73584 75336 75840 77056 79632 80640 80738 81528 81760 82560 84096 86505 86688 87892 88480 91008 91980 92272 93440 94170 95116 96320 98112 99072 99540 100448 101120 101910 103806 105120 106176 108360 108704 109865 113004 113760 115340 115584 118895 121107 122292 122640 123840 125560 130816 131838 132720 135880 138408 140160 141255 141568 142674 144480 147168 150672 151680 152865 159264 161476 163056 163520 165120 168192 173010 173376 175784 176960 182016 183960 184544 188340 190232 192640 196224 197757 199080 200896 201845 203820 207612 210240 212352 214011 216720 217408 219730 226008 227520 230680 231168 237790 242214 244584 245280 247680 247981 251120 259515 263676 265440 271760 276816 280320 282510 285348 288960 294336 301344 303360 305730 318528 322952 326112 327040 329595 346020 346752 351568 353920 356685 363321 367920 369088 376680 380464 385280 392448 395514 398160 401792 403690 407640 415224 420480 424704 428022 433440 434816 439460 452016 455040 461360 475580 484428 489168 490560 495360 495962 502240 519030 527352 530880 543520 553632 565020 570696 577920 588672 602688 605535 611460 637056 645904 652224 654080 659190 692040 693504 703136 707840 713370 726642 735840 738176 743943 753360 760928 791028 796320 803584 807380 815280 830448 840960 856044 866880 869632 878920 904032 910080 922720 951160 968856 978336 981120 988785 991924 1004480 1038060 1054704 1061760 1070055 1087040 1107264 1130040 1141392 1155840 1177344 1205376 1211070 1222920 1239905 1274112 1291808 1304448 1318380 1384080 1406272 1426740 1453284 1471680 1476352 1487886 1506720 1521856 1582056 1592640 1614760 1630560 1660896 1712088 1733760 1735867 1757840 1808064 1816605 1845440 1902320 1937712 1956672 1962240 1977570 1983848 2008960 2076120 2109408 2123520 2140110 2174080 2214528 2231829 2260080 2282784 2410752 2422140 2445840 2479810 2583616 2608896 2636760 2768160 2812544 2853480 2906568 2943360 2975772 3013440 3043712 3164112 3185280 3229520 3261120 3321792 3424176 3467520 3471734 3515680 3616128 3633210 3690880 3719715 3804640 3875424 3913344 3955140 3967696 4017920 4152240 4218816 4280220 4348160 4429056 4463658 4520160 4565568 4844280 4891680 4959620 5167232 5207601 5273520 5536320 5625088 5706960 5813136 5886720 5951544 6026880 6087424 6328224 6370560 6459040 6522240 6643584 6848352 6943468 7031360 7232256 7266420 7381760 7439430 7609280 7750848 7826688 7910280 7935392 8304480 8437632 8560440 8679335 8927316 9040320 9131136 9688560 9783360 9919240 10334464 10415202 10547040 11072640 11159145 11413920 11626272 11903088 12053760 12656448 12918080 13044480 13287168 13696704 13886936 14062720 14532840 14878860 15218560 15501696 15622803 15820560 15870784 16608960 16875264 17120880 17358670 17854632 18080640 18262272 19377120 19566720 19838480 20830404 21094080 22145280 22318290 22827840 23252544 23806176 25312896 25836160 26038005 27393408 27773872 28125440 29065680 29757720 30437120 31003392 31245606 31641120 31741568 33217920 34241760 34717340 35709264 36161280 38754240 39133440 39676960 41660808 42188160 44636580 45655680 46505088 47612352 50625792 51672320 52076010 54786816 55547744 58131360 59515440 62491212 63282240 63483136 66435840 68483520 69434680 71418528 77508480 78114015 79353920 83321616 84376320 89273160 91311360 93010176 95224704 104152020 111095488 116262720 119030880 124982424 126564480 136967040 138869360 142837056 155016960 156228030 158707840 166643232 178546320 190449408 208304040 222190976 232525440 238061760 249964848 253128960 273934080 277738720 285674112 312456060 317415680 333286464 357092640 416608080 444381952 465050880 476123520 499929696 555477440 571348224 624912120 666572928 714185280 833216160 952247040 999859392 1110954880 1249824240 1333145856 1428370560 1666432320 1999718784 2221909760 2499648480 2856741120 3332864640 3999437568 4999296960 6665729280 9998593920 19997187840
• Sum of all divisors σ(n): 83057694720
• Sum of proper divisors (its aliquot sum) s(n): 63060506880
• 19997187840 is an abundant number, because the sum of its proper divisors (63060506880) is greater than itself. Its abundance is 43063319040

Bases of 19997187840

• Binary: 10010100111111011001101111100000000₂
• Hexadecimal: 0x4A7ECDF00
• Base-36: 96PT4W0

Squares and roots of 19997187840

• 19997187840 squared (19997187840²) is 399887521508243865600
• 19997187840 cubed (19997187840³) is 7996625882472392688930914304000
• The square root of 19997187840 is 141411.4134007577
• The cube root of 19997187840 is 2714.2903876875

Scales and comparisons

• 19,997,187,840 seconds is equal to 635 years, 44 weeks, 22 hours, 24 minutes.
• To count from 1 to 19,997,187,840 would take you about one thousand, two hundred seventy-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 19997187840 cubic inches would be around 226.2 feet tall.

Recreational maths with 19997187840

• 19997187840 backwards is 04878179991
• 19997187840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 19997187840's digits is 63
• More coming soon!