128701845720

Names of 128701845720

• Cardinal: 128701845720 can be written as One hundred twenty-eight billion, seven hundred one million, eight hundred forty-five thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2870184572 × 10¹¹

Factors of 128701845720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 456

Divisors of 128701845720

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 29 30 35 36 40 42 45 49 56 58 60 63 70 72 84 87 90 98 105 116 120 126 127 140 145 147 168 174 180 196 203 210 232 245 252 254 261 280 283 290 294 315 343 348 360 381 392 406 420 435 441 490 504 508 522 566 580 588 609 630 635 686 696 735 762 812 840 849 870 882 889 980 1015 1016 1029 1044 1132 1143 1160 1176 1218 1260 1270 1305 1372 1415 1421 1470 1524 1624 1698 1715 1740 1764 1778 1827 1905 1960 1981 2030 2058 2088 2205 2264 2286 2436 2520 2540 2547 2610 2667 2744 2830 2842 2940 3045 3048 3087 3396 3430 3480 3528 3556 3654 3683 3810 3962 4060 4116 4245 4263 4410 4445 4572 4872 5080 5094 5145 5220 5334 5660 5684 5715 5880 5943 6090 6174 6223 6792 6860 7105 7112 7308 7366 7620 7924 8001 8120 8207 8232 8490 8526 8820 8890 9135 9144 9905 9947 10188 10290 10440 10668 11049 11320 11368 11430 11886 12180 12348 12446 12735 12789 13335 13720 13867 14210 14616 14732 15240 15435 15848 16002 16414 16980 17052 17640 17780 17829 18270 18415 18669 19810 19894 20376 20580 21315 21336 22098 22860 23772 24360 24621 24696 24892 25470 25578 25781 26670 27734 28420 29464 29715 29841 30870 31115 32004 32828 33147 33960 34104 35560 35658 35941 36540 36830 37338 39620 39788 40005 41035 41160 41601 42630 43561 44196 45720 47544 49242 49735 49784 50940 51156 51562 53340 55245 55468 56007 56840 57449 59430 59682 61740 62230 63945 64008 65656 66294 69335 71316 71882 73080 73660 73863 74676 77343 79240 79576 80010 82070 83202 85260 87122 88392 89145 89523 93345 97069 98484 99470 101880 102312 103124 106680 107823 110490 110936 112014 114898 118860 119364 123105 123480 124460 124803 127890 128905 130683 132588 138670 142632 143764 147320 147726 149205 149352 154686 160020 164140 165735 166404 170520 172347 174244 178290 179046 179705 180467 186690 194138 196968 198940 206248 208005 215646 217805 220980 224028 229796 232029 237720 238728 246210 248920 249606 251587 255780 257810 261366 265176 277340 280035 287245 287528 291207 295452 298410 309372 320040 323469 328280 331470 332808 344694 348488 356580 358092 359410 360934 369315 373380 386715 388276 392049 397880 402143 416010 431292 435610 441960 447615 448056 459592 464058 485345 492420 499212 503174 511560 515620 517041 522732 539115 541401 554680 560070 574490 582414 590904 596820 618744 624015 646938 653415 662940 689388 713160 716184 718820 721868 738630 746760 754761 773430 776552 784098 804286 832020 861735 862584 871220 873621 895230 902335 928116 970690 984840 998424 1006348 1031240 1034082 1042289 1045464 1078230 1082802 1120140 1148980 1160145 1164828 1193640 1206429 1248030 1257935 1263269 1293876 1306830 1325880 1378776 1437640 1443736 1456035 1477260 1509522 1546860 1568196 1608572 1617345 1624203 1664040 1723470 1742440 1747242 1761109 1790460 1804670 1856232 1941380 1960245 2010715 2012696 2068164 2084578 2156460 2165604 2240280 2264283 2297960 2320290 2329656 2412858 2496060 2515870 2526538 2585205 2587752 2613660 2707005 2815001 2912070 2954520 3019044 3093720 3126867 3136392 3217144 3234690 3248406 3446940 3494484 3522218 3580920 3609340 3619287 3773805 3789807 3882760 3920490 4021430 4136328 4169156 4312920 4331208 4368105 4528566 4640580 4825716 4992120 5031740 5053076 5170410 5211445 5227320 5283327 5414010 5630002 5824140 6032145 6038088 6253734 6316345 6469380 6496812 6893880 6988968 7044436 7218680 7238574 7296023 7547610 7579614 7840980 8042860 8121015 8338312 8445003 8736210 8805545 9057132 9281160 9380601 9651432 10063480 10106152 10340820 10422890 10566654 10828020 11260004 11321415 11369421 11648280 12064290 12327763 12507468 12632690 12938760 12993624 14075005 14088872 14477148 14592046 15095220 15159228 15634335 15681960 15849981 16085720 16242030 16890006 17472420 17611090 18096435 18114264 18761202 18949035 20681640 20845780 21133308 21656040 21888069 22520008 22642830 22738842 24128580 24655526 25014936 25265380 25335009 26416635 28150010 28954296 29184092 30190440 30318456 31268670 31699962 32484060 33780012 34944840 35222180 36192870 36480115 36983289 37522404 37898070 41691560 42225015 42266616 43776138 45285660 45477684 46903005 48257160 49311052 50530760 50670018 51072161 52833270 56300020 56847105 58368184 61638815 62537340 63399924 64968120 65664207 67560024 70444360 72385740 72960230 73966578 75044808 75796140 79249905 84450030 87552276 90571320 90955368 93806010 98622104 101340036 102144322 105666540 109440345 110949867 112600040 113694210 123277630 125074680 126675045 126799848 131328414 144771480 145920460 147933156 151592280 153216483 158499810 168900060 175104552 184916445 187612020 202680072 204288644 211333080 218880690 221899734 227388420 246555260 253350090 255360805 262656828 291840920 295866312 306432966 316999620 328321035 337800120 357505127 369832890 375224040 408577288 437761380 443799468 454776840 459649449 493110520 506700180 510721610 525313656 554749335 612865932 633999240 656642070 715010254 739665780 766082415 875522760 887598936 919298898 1013400360 1021443220 1072515381 1109498670 1225731864 1313284140 1430020508 1479331560 1532164830 1787525635 1838597796 2042886440 2145030762 2218997340 2298247245 2626568280 2860041016 3064329660 3217546143 3575051270 3677195592 4290061524 4437994680 4596494490 5362576905 6128659320 6435092286 7150102540 8580123048 9192988980 10725153810 12870184572 14300205080 16087730715 18385977960 21450307620 25740369144 32175461430 42900615240 64350922860 128701845720
• Sum of all divisors σ(n): 510382080000
• Sum of proper divisors (its aliquot sum) s(n): 381680234280
• 128701845720 is an abundant number, because the sum of its proper divisors (381680234280) is greater than itself. Its abundance is 252978388560

Bases of 128701845720

• Binary: 1110111110111001110100101000011011000₂
• Hexadecimal: 0x1DF73A50D8
• Base-36: 1N4HR7Q0

Squares and roots of 128701845720

• 128701845720 squared (128701845720²) is 16564165091734682318400
• 128701845720 cubed (128701845720³) is 2131838620117046730915928717248000
• The square root of 128701845720 is 358750.3947314901
• The cube root of 128701845720 is 5048.8785631273

Scales and comparisons

• 128,701,845,720 seconds is equal to 4,092 years, 16 weeks, 4 days, 16 hours, 42 minutes.
• To count from 1 to 128,701,845,720 would take you about eight thousand, one hundred eighty-four 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 128701845720 cubic inches would be around 420.7 feet tall.

Recreational maths with 128701845720

• 128701845720 backwards is 027548107821
• 128701845720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128701845720's digits is 45
• More coming soon!