728478642528

Names of 728478642528

• Cardinal: 728478642528 can be written as Seven hundred twenty-eight billion, four hundred seventy-eight million, six hundred forty-two thousand, five hundred twenty-eight.

Scientific notation

• Scientific notation: 7.28478642528 × 10¹¹

Factors of 728478642528

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 444

Divisors of 728478642528

• Number of divisors d(n): 972
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 32 36 39 42 48 49 52 54 56 63 72 78 81 84 91 96 98 104 108 112 117 126 144 147 156 162 168 169 182 189 196 208 216 224 234 243 252 273 288 294 312 324 336 338 351 364 378 392 416 419 432 441 468 486 504 507 546 567 588 624 637 648 672 676 702 728 729 756 784 819 838 864 882 936 972 1008 1014 1053 1092 1134 1176 1183 1248 1257 1274 1296 1323 1352 1404 1456 1458 1512 1521 1568 1638 1676 1701 1764 1872 1911 1944 2016 2028 2106 2184 2187 2268 2352 2366 2457 2514 2548 2592 2646 2704 2808 2912 2916 2933 3024 3042 3159 3276 3352 3402 3528 3549 3744 3771 3822 3888 3969 4056 4212 4368 4374 4536 4563 4704 4732 4914 5028 5096 5103 5292 5408 5447 5616 5733 5832 5866 6048 6084 6318 6552 6561 6704 6804 7056 7098 7371 7542 7644 7776 7938 8112 8281 8424 8736 8748 8799 9072 9126 9464 9477 9828 10056 10192 10206 10584 10647 10894 11232 11313 11466 11664 11732 11907 12168 12636 13104 13122 13408 13608 13689 14112 14196 14742 15084 15288 15309 15876 16224 16341 16562 16848 17199 17496 17598 18144 18252 18928 18954 19656 20112 20384 20412 20531 21168 21294 21788 22113 22626 22932 23328 23464 23814 24336 24843 25272 26208 26244 26397 27216 27378 28392 28431 29484 30168 30576 30618 31752 31941 32682 33124 33696 33939 34398 34992 35196 35721 36504 37856 37908 38129 39312 40224 40824 41062 41067 42336 42588 43576 44226 45252 45864 45927 46928 47628 48672 49023 49686 50544 51597 52488 52794 54432 54756 56784 56862 58968 60336 61152 61236 61593 63504 63882 65364 66248 66339 67878 68796 69984 70392 70811 71442 73008 74529 75816 76258 78624 79191 81648 82124 82134 85176 85293 87152 88452 90504 91728 91854 93856 95256 95823 98046 99372 101088 101817 103194 104976 105588 107163 109512 113568 113724 114387 117936 120672 122472 123186 123201 127008 127764 130728 132496 132678 135756 137592 140784 141622 142884 146016 147069 149058 151632 152516 154791 158382 163296 164248 164268 170352 170586 174304 176904 181008 183456 183708 184779 190512 191646 196092 198744 199017 203634 206388 209952 211176 212433 214326 219024 223587 227448 228774 235872 237573 244944 246372 246402 255528 261456 264992 265356 266903 271512 275184 281568 283244 285768 287469 294138 298116 303264 305032 305451 309582 316764 321489 328496 328536 340704 341172 343161 353808 362016 367416 369558 369603 381024 383292 392184 397488 398034 407268 412776 422352 424866 428652 438048 441207 447174 454896 457548 464373 475146 489888 492744 492804 495677 511056 522912 530712 533806 543024 550368 554337 566488 571536 574938 588276 596232 597051 610064 610902 619164 633528 637299 642978 656992 657072 670761 682344 686322 707616 712719 734832 739116 739206 766584 784368 794976 796068 800709 814536 825552 844704 849732 857304 862407 882414 894348 909792 915096 916353 928746 950292 985488 985608 991354 1022112 1029483 1061424 1067612 1086048 1108674 1108809 1132976 1143072 1149876 1176552 1192464 1194102 1220128 1221804 1238328 1267056 1274598 1285956 1314144 1323621 1341522 1364688 1372644 1393119 1425438 1469664 1478232 1478412 1487031 1533168 1568736 1592136 1601418 1629072 1651104 1663011 1699464 1714608 1724814 1764828 1788696 1830192 1832706 1857492 1900584 1911897 1970976 1971216 1982708 2012283 2058966 2122848 2135224 2138157 2217348 2217618 2265952 2299752 2353104 2384928 2388204 2402127 2443608 2476656 2534112 2549196 2571912 2587221 2647242 2683044 2729376 2745288 2749059 2786238 2850876 2956464 2956824 2974062 3066336 3088449 3184272 3202836 3258144 3326022 3398928 3429216 3449628 3469739 3529656 3577392 3660384 3665412 3714984 3801168 3823794 3942432 3965416 3970863 4024566 4117932 4179357 4270448 4276314 4434696 4435236 4461093 4599504 4706208 4776408 4804254 4887216 4953312 4989033 5098392 5143824 5174442 5294484 5366088 5490576 5498118 5572476 5701752 5735691 5912928 5913648 5948124 6036849 6176898 6368544 6405672 6414471 6652044 6797856 6899256 6939478 7059312 7154784 7206381 7330824 7429968 7602336 7647588 7761663 7930832 7941726 8049132 8235864 8358714 8540896 8552628 8869392 8870472 8922186 9199008 9265347 9552816 9608508 9774432 9978066 10196784 10287648 10348884 10409217 10588968 10732176 10981152 10996236 11144952 11403504 11471382 11827296 11896248 11912589 12073698 12353796 12811344 12828942 13304088 13383279 13798512 13878956 14118624 14412762 14661648 14859936 14967099 15295176 15523326 15861664 15883452 16098264 16471728 16717428 17105256 17207073 17738784 17740944 17844372 18110547 18530694 19105632 19217016 19243413 19956132 20393568 20697768 20818434 21177936 21464352 21619143 21992472 22289904 22807008 22942764 23792496 23825178 24147396 24707592 25622688 25657884 26608176 26766558 27597024 27757912 27796041 28825524 29323296 29934198 30590352 31046652 31227651 31766904 32196528 32943456 33434856 34210512 34414146 35481888 35688744 35737767 36221094 37061388 38434032 38486826 39912264 40149837 41395536 41636868 42355872 43238286 43984944 44579808 44901297 45885528 47584992 47650356 48294792 49415184 51315768 51621219 53216352 53533116 54331641 55515824 55592082 57651048 59868396 61180704 62093304 62455302 63533808 64393056 64857429 66869712 68421024 68828292 71377488 71475534 72442188 74122776 76868064 76973652 79824528 80299674 82791072 83273736 83388123 86476572 87969888 89802594 91771056 93682953 95300712 96589584 98830368 102631536 103242438 107066232 108663282 111031648 111184164 115302096 119736792 120449511 124186608 124910604 127067616 129714858 133739424 134703891 137656584 142754976 142951068 144884376 148245552 153947304 154863657 159649056 160599348 166547472 166776246 172953144 179605188 183542112 187365906 190601424 193179168 194572287 205263072 206484876 214132464 217326564 222368328 230604192 239473584 240899022 248373216 249821208 250164369 259429716 269407782 275313168 281048859 285902136 289768752 296491104 307894608 309727314 321198696 333094944 333552492 345906288 359210376 361348533 374731812 381202848 389144574 412969752 428264928 434653128 444736656 464590971 478947168 481798044 499642416 500328738 518859432 538815564 550626336 562097718 571804272 579537504 583716861 615789216 619454628 642397392 667104984 691812576 718420752 722697066 749463624 778289148 825939504 843146577 869306256 889473312 929181942 963596088 999284832 1000657476 1037718864 1077631128 1084045599 1124195436 1143608544 1167433722 1238909256 1284794784 1334209968 1436841504 1445394132 1498927248 1556578296 1651879008 1686293154 1738612512 1751150583 1858363884 1927192176 2001314952 2075437728 2155262256 2168091198 2248390872 2334867444 2477818512 2529439731 2668419936 2890788264 2997854496 3113156592 3252136797 3372586308 3502301166 3716727768 3854384352 4002629904 4310524512 4336182396 4496781744 4669734888 4955637024 5058879462 5781576528 6226313184 6504273594 6745172616 7004602332 7433455536 7588319193 8005259808 8672364792 8993563488 9339469776 10117758924 11563153056 13008547188 13490345232 14009204664 14866911072 15176638386 17344729584 18678939552 20235517848 22764957579 26017094376 26980690464 28018409328 30353276772 34689459168 40471035696 45529915158 52034188752 56036818656 60706553544 80942071392 91059830316 104068377504 121413107088 182119660632 242826214176 364239321264 728478642528
• Sum of all divisors σ(n): 2716157922660
• Sum of proper divisors (its aliquot sum) s(n): 1987679280132
• 728478642528 is an abundant number, because the sum of its proper divisors (1987679280132) is greater than itself. Its abundance is 1259200637604

Bases of 728478642528

• Binary: 1010100110011100101101011111000101100000₂
• Hexadecimal: 0xA99CB5F160
• Base-36: 9ANPDI00

Squares and roots of 728478642528

• 728478642528 squared (728478642528²) is 530681132619437610230784
• 728478642528 cubed (728478642528³) is 386589871105829451127709893117181952
• The square root of 728478642528 is 853509.6030672413
• The cube root of 728478642528 is 8997.8539843313

Scales and comparisons

• 728,478,642,528 seconds is equal to 23,163 years, 19 weeks, 18 hours, 28 minutes, 48 seconds.
• To count from 1 to 728,478,642,528 would take you about forty-six thousand, three hundred twenty-six 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 728478642528 cubic inches would be around 749.8 feet tall.

Recreational maths with 728478642528

• 728478642528 backwards is 825246874827
• 728478642528 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 728478642528's digits is 63
• More coming soon!