128979305728

Names of 128979305728

• Cardinal: 128979305728 can be written as One hundred twenty-eight billion, nine hundred seventy-nine million, three hundred five thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.28979305728 × 10¹¹

Factors of 128979305728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 400

Divisors of 128979305728

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 4 7 8 13 14 16 17 19 26 28 32 34 38 52 56 61 64 68 76 91 104 112 119 122 128 133 136 152 182 208 221 224 238 244 247 256 266 272 281 304 323 364 416 427 442 448 476 488 494 532 544 562 608 646 728 793 832 854 884 896 952 976 988 1037 1064 1088 1124 1159 1216 1292 1456 1547 1586 1664 1708 1729 1768 1792 1904 1952 1967 1976 2074 2128 2176 2248 2261 2318 2432 2584 2912 3094 3172 3328 3416 3458 3536 3653 3808 3904 3934 3952 4148 4199 4256 4352 4496 4522 4636 4777 4864 5168 5339 5551 5824 6188 6344 6832 6916 7072 7259 7306 7616 7808 7868 7904 8113 8296 8398 8512 8992 9044 9272 9554 10336 10678 11102 11648 12376 12688 13481 13664 13832 14144 14518 14612 15067 15232 15616 15736 15808 16226 16592 16796 17024 17141 17984 18088 18544 19108 19703 20672 21356 22204 23296 24752 25376 25571 26962 27328 27664 28288 29036 29224 29393 30134 30464 31472 31616 32452 33184 33439 33592 34048 34282 35968 36176 37088 37373 38216 39406 41344 42712 44408 49504 50752 51142 53924 54656 55328 56576 58072 58448 58786 60268 62101 62944 63232 64904 66368 66878 67184 68564 69407 71936 72352 74176 74746 76432 78812 82688 85424 88816 90763 94367 99008 101504 102284 105469 107848 109312 110656 116144 116896 117572 119987 120536 124202 125888 129808 132736 133756 134368 137128 137921 138814 144704 148352 149492 152864 157624 170848 177632 181526 188734 198016 203008 204568 210938 215696 221312 222833 232288 233792 235144 239974 241072 248404 251776 256139 259616 265472 267512 268736 274256 275842 277628 289408 291397 296704 298984 305728 315248 325679 341696 355264 363052 377468 396032 409136 421876 431392 434707 442624 445666 464576 467584 470288 479948 482144 485849 496808 503552 512278 519232 535024 537472 548512 551684 555256 578816 582794 597968 611456 630496 635341 651358 683392 710528 726104 754936 818272 843752 862784 869414 891332 929152 935168 940576 959896 964288 971698 993616 1024556 1038464 1070048 1074944 1097024 1103368 1110512 1165588 1179919 1195936 1222912 1260992 1270682 1302716 1366784 1421056 1452208 1509872 1559831 1636544 1687504 1725568 1738828 1782664 1792973 1858304 1881152 1919792 1928576 1943396 1987232 2039779 2049112 2076928 2140096 2194048 2206736 2221024 2279753 2331176 2359838 2391872 2521984 2541364 2605432 2904416 3019744 3119662 3273088 3375008 3451136 3477656 3565328 3585946 3762304 3788161 3839584 3857152 3886792 3974464 4079558 4098224 4233827 4280192 4388096 4413472 4442048 4559506 4662352 4719676 4783744 5043968 5082728 5210864 5536543 5808832 6039488 6239324 6546176 6750016 6955312 7130656 7171892 7524608 7576322 7679168 7773584 7948928 8159116 8196448 8259433 8467654 8560384 8826944 8884096 9119012 9324704 9439352 9567488 10165456 10421728 11073086 11617664 12078976 12478648 13500032 13910624 14261312 14343784 15152644 15358336 15547168 15897856 16318232 16392896 16518866 16935308 17653888 17768192 18238024 18649408 18878704 20330912 20843456 22146172 23235328 24157952 24957296 26517127 27000064 27821248 28522624 28687568 29636789 30305288 30716672 31094336 32636464 32785792 33037732 33870616 35307776 36476048 37298816 37757408 38755801 40661824 41686912 44292344 49914592 53034254 55642496 57045248 57375136 59273578 60610576 62188672 65272928 65571584 66075464 67741232 71975059 72952096 74597632 75514816 77511602 81323648 83373824 88584688 99829184 106068508 111284992 114750272 118547156 121221152 124377344 130545856 132150928 135482464 143950118 145904192 151029632 155023204 162647296 177169376 199658368 212137016 229500544 237094312 242442304 261091712 264301856 270964928 287900236 291808384 302059264 310046408 354338752 399316736 424274032 459001088 474188624 484884608 503825413 522183424 528603712 541929856 575800472 583616768 620092816 708677504 848548064 948377248 969769216 1007650826 1057207424 1083859712 1151600944 1240185632 1417355008 1697096128 1896754496 2015301652 2114414848 2303201888 2480371264 3394192256 3793508992 4030603304 4606403776 4960742528 6788384512 7587017984 8061206608 9212807552 9921485056 16122413216 18425615104 32244826432 64489652864 128979305728
• Sum of all divisors σ(n): 360231943680
• Sum of proper divisors (its aliquot sum) s(n): 231252637952
• 128979305728 is an abundant number, because the sum of its proper divisors (231252637952) is greater than itself. Its abundance is 102273332224

Bases of 128979305728

• Binary: 1111000000111110001000000010100000000₂
• Hexadecimal: 0x1E07C40500
• Base-36: 1N92Y58G

Squares and roots of 128979305728

• 128979305728 squared (128979305728²) is 16635661306076893609984
• 128979305728 cubed (128979305728³) is 2145656045583951445198655929188352
• The square root of 128979305728 is 359136.8899570191
• The cube root of 128979305728 is 5052.5041428711

Scales and comparisons

• 128,979,305,728 seconds is equal to 4,101 years, 7 weeks, 3 days, 55 minutes, 28 seconds.
• To count from 1 to 128,979,305,728 would take you about eight thousand, two hundred two 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 128979305728 cubic inches would be around 421 feet tall.

Recreational maths with 128979305728

• 128979305728 backwards is 827503979821
• 128979305728 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128979305728's digits is 61
• More coming soon!