864640387728

Names of 864640387728

• Cardinal: 864640387728 can be written as Eight hundred sixty-four billion, six hundred forty million, three hundred eighty-seven thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 8.64640387728 × 10¹¹

Factors of 864640387728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 204

Divisors of 864640387728

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 23 24 26 27 36 39 46 48 52 54 69 72 78 81 92 104 108 117 138 144 156 162 163 169 184 207 208 216 234 243 276 299 312 324 326 338 351 368 414 432 468 486 489 507 552 598 621 624 648 652 676 702 729 828 897 936 972 978 1014 1053 1104 1196 1242 1296 1304 1352 1404 1458 1467 1521 1656 1794 1863 1872 1944 1956 2028 2106 2119 2187 2197 2392 2484 2608 2691 2704 2808 2916 2934 3042 3159 3312 3588 3726 3749 3887 3888 3912 4056 4212 4238 4374 4394 4401 4563 4784 4968 5382 5589 5616 5832 5868 6084 6318 6357 6561 6591 7176 7452 7498 7774 7824 8073 8112 8424 8476 8748 8788 8802 9126 9477 9936 10764 11178 11247 11661 11664 11736 12168 12636 12714 13122 13182 13203 13689 14352 14904 14996 15548 16146 16767 16848 16952 17496 17576 17604 18252 18954 19071 19773 21528 22356 22494 23322 23472 24219 24336 25272 25428 26244 26364 26406 27378 27547 28431 29808 29992 31096 32292 33534 33741 33904 34983 34992 35152 35208 36504 37908 38142 39546 39609 41067 43056 44712 44988 46644 48438 48737 50301 50531 50544 50856 52488 52728 52812 54756 55094 56862 57213 59319 59984 62192 64584 67068 67482 69966 70416 72657 73008 75816 76284 79092 79218 82134 82641 85293 89424 89976 93288 96876 97474 100602 101062 101223 101712 104949 104976 105456 105624 109512 110188 113724 114426 118638 118827 123201 129168 134136 134964 139932 145314 146211 150903 151593 151632 152568 158184 158436 164268 165282 170586 171639 177957 179952 186576 193752 194948 201204 202124 202446 209898 211248 217971 219024 220376 227448 228852 237276 237654 246402 247923 268272 269928 279864 290628 292422 301806 303186 303669 305136 314847 316368 316872 328536 330564 341172 343278 355914 356481 358111 369603 387504 389896 402408 404248 404892 419796 435942 438633 440752 454779 454896 457704 474552 475308 492804 495846 514917 533871 539856 559728 581256 584844 603612 606372 607338 629694 633581 633744 653913 657072 661128 682344 686556 711828 712962 716222 739206 743769 779792 804816 808496 809784 839592 871884 877266 909558 911007 915408 944541 949104 950616 985608 991692 1029834 1067742 1069443 1074333 1108809 1162512 1169688 1207224 1212744 1214676 1259388 1267162 1307826 1315899 1322256 1364337 1364688 1373112 1423656 1425924 1432444 1478412 1487538 1544751 1601613 1619568 1679184 1743768 1754532 1819116 1822014 1889082 1900743 1901232 1961739 1971216 1983384 2059668 2135484 2138886 2148666 2217618 2231307 2339376 2414448 2425488 2429352 2518776 2534324 2615652 2631798 2728674 2733021 2746224 2833623 2847312 2851848 2864888 2956824 2975076 3089502 3203226 3222999 3487536 3509064 3638232 3644028 3778164 3801486 3923478 3947697 3966768 4093011 4119336 4270968 4277772 4297332 4435236 4462614 4634253 4804839 4858704 5037552 5068648 5231304 5263596 5457348 5466042 5667246 5702229 5703696 5729776 5913648 5950152 6179004 6406452 6445998 6693921 7018128 7276464 7288056 7556328 7602972 7846956 7895394 8186022 8199063 8236553 8238672 8500869 8541936 8555544 8594664 8870472 8925228 9268506 9609678 9668997 10137296 10462608 10527192 10914696 10932084 11334492 11404458 11843091 11900304 12279033 12358008 12812904 12891996 13387842 13902759 14414517 14576112 15112656 15205944 15693912 15790788 16372044 16398126 16473106 17001738 17106687 17111088 17189328 17740944 17850456 18537012 19219356 19337994 20081763 21054384 21829392 21864168 22668984 22808916 23686182 24558066 24597189 24709659 24716016 25502607 25625808 25783992 26775684 27805518 28829034 29006991 30411888 31387824 31581576 32744088 32796252 32946212 34003476 34213374 35529273 35700912 36837099 37074024 38438712 38675988 40163526 43728336 45337968 45617832 47372364 49116132 49194378 49419318 51005214 51320061 51567984 53551368 55611036 57658068 58013982 60245289 63163152 65488176 65592504 65892424 68006952 68426748 71058546 73674198 74128977 74148048 76877424 77351976 80327052 87020973 91235664 94744728 98232264 98388756 98838636 102010428 102640122 106587819 107102736 110511297 111222072 115316136 116027964 120490578 131185008 131784848 136013904 136853496 142117092 147348396 148257954 153960183 154703952 160654104 174041946 180735867 189489456 196464528 196777512 197677272 204020856 205280244 213175638 221022594 222386931 222444144 230632272 232055928 240981156 261062919 273706992 284234184 294696792 296515908 307920366 319763457 321308208 331533891 348083892 361471734 393555024 395354544 408041712 410560488 426351276 442045188 444773862 461880549 464111856 481962312 522125838 568468368 589393584 593031816 615840732 639526914 663067782 667160793 696167784 722943468 783188757 821120976 852702552 884090376 889547724 923761098 963924624 1044251676 1186063632 1231681464 1279053828 1326135564 1334321586 1385641647 1392335568 1445886936 1566377514 1705405104 1768180752 1779095448 1847522196 2001482379 2088503352 2349566271 2463362928 2558107656 2652271128 2668643172 2771283294 2891773872 3132755028 3558190896 3695044392 4002964758 4156924941 4177006704 4699132542 5116215312 5304542256 5337286344 5542566588 6004447137 6265510056 7390088784 8005929516 8313849882 9398265084 10674572688 11085133176 12008894274 12531020112 16011859032 16627699764 18013341411 18796530168 22170266352 24017788548 32023718064 33255399528 36026682822 37593060336 48035577096 54040024233 66510799056 72053365644 96071154192 108080048466 144106731288 216160096932 288213462576 432320193864 864640387728
• Sum of all divisors σ(n): 2857807505280
• Sum of proper divisors (its aliquot sum) s(n): 1993167117552
• 864640387728 is an abundant number, because the sum of its proper divisors (1993167117552) is greater than itself. Its abundance is 1128526729824

Bases of 864640387728

• Binary: 1100100101010000100101010100101010010000₂
• Hexadecimal: 0xC950954A90
• Base-36: B17KK900

Squares and roots of 864640387728

• 864640387728 squared (864640387728²) is 747603000090426173001984
• 864640387728 cubed (864640387728³) is 646407747864802105285194651473252352
• The square root of 864640387728 is 929860.4130341285
• The cube root of 864640387728 is 9526.7588606609

Scales and comparisons

• 864,640,387,728 seconds is equal to 27,492 years, 46 weeks, 1 day, 21 hours, 28 minutes, 48 seconds.
• To count from 1 to 864,640,387,728 would take you about fifty-four thousand, nine hundred eighty-five 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 864640387728 cubic inches would be around 793.9 feet tall.

Recreational maths with 864640387728

• 864640387728 backwards is 827783046468
• The number of decimal digits it has is: 12
• The sum of 864640387728's digits is 63
• More coming soon!