128643683840

Names of 128643683840

• Cardinal: 128643683840 can be written as One hundred twenty-eight billion, six hundred forty-three million, six hundred eighty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.2864368384 × 10¹¹

Factors of 128643683840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 282

Divisors of 128643683840

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 37 40 56 64 68 70 74 80 85 101 112 113 119 128 136 140 148 160 170 185 202 224 226 238 256 259 272 280 296 320 340 370 404 448 452 476 505 512 518 544 560 565 592 595 629 640 680 707 740 791 808 896 904 952 1010 1036 1088 1120 1130 1184 1190 1258 1280 1295 1360 1414 1480 1582 1616 1717 1792 1808 1904 1921 2020 2072 2176 2240 2260 2368 2380 2516 2560 2590 2720 2828 2960 3145 3164 3232 3434 3535 3584 3616 3737 3808 3842 3955 4040 4144 4181 4352 4403 4480 4520 4736 4760 5032 5180 5440 5656 5920 6290 6328 6464 6868 7070 7232 7474 7616 7684 7910 8080 8288 8362 8585 8704 8806 8960 9040 9472 9520 9605 10064 10360 10880 11312 11413 11840 12019 12580 12656 12928 13447 13736 14140 14464 14948 15232 15368 15820 16160 16576 16724 17170 17612 17920 18080 18685 18944 19040 19210 20128 20720 20905 21760 22015 22624 22826 23680 24038 25160 25312 25856 26159 26894 27472 28280 28928 29267 29896 30464 30736 31640 32320 33152 33448 34340 35224 36160 37370 38080 38420 40256 41440 41810 43520 44030 45248 45652 47360 48076 50320 50624 51712 52318 53788 54944 56560 57065 57856 58534 59792 60095 60928 61472 63280 63529 64640 66304 66896 67235 68680 70448 71077 72320 74740 76160 76840 79891 80512 82880 83620 88060 90496 91304 94720 96152 100640 101248 104636 107576 109888 113120 114130 117068 119584 120190 122944 126560 127058 129280 130795 132608 133792 134470 137360 140896 142154 144640 146335 149480 152320 153680 159782 161024 165760 167240 176120 180992 182608 192304 194021 201280 202496 209272 215152 219776 226240 228260 234136 239168 240380 245888 253120 254116 258560 261590 267584 268940 274720 281792 284308 289280 292670 298960 304640 307360 317645 319564 322048 331520 334480 352240 355385 361984 365216 384608 388042 399455 402560 404992 418544 422281 430304 439552 444703 452480 456520 468272 478336 480760 491776 497539 506240 508232 523180 535168 537880 549440 563584 568616 585340 597920 614720 635290 639128 663040 668960 704480 710770 730432 769216 776084 798910 805120 837088 844562 860608 879104 889406 904960 913040 936544 956672 961520 970105 983552 995078 1012480 1016464 1046360 1070336 1075760 1098880 1127168 1137232 1170680 1195840 1229440 1270580 1278256 1337920 1358147 1408960 1421540 1460864 1538432 1552168 1597820 1610240 1674176 1689124 1721216 1778812 1809920 1826080 1873088 1913344 1923040 1940210 1990156 2024960 2032928 2092720 2111405 2140672 2151520 2197760 2223515 2254336 2274464 2341360 2391680 2458880 2487695 2541160 2556512 2675840 2716294 2817920 2843080 2921728 2955967 3076864 3104336 3195640 3348352 3378248 3442432 3557624 3652160 3746176 3846080 3880420 3980312 4065856 4185440 4222810 4303040 4395520 4447030 4548928 4682720 4783360 4917760 4975390 5082320 5113024 5351680 5432588 5635840 5686160 5843456 5911934 6153728 6208672 6391280 6696704 6756496 6790735 6884864 7115248 7178777 7304320 7492352 7692160 7760840 7960624 8131712 8370880 8445620 8606080 8894060 9097856 9365440 9566720 9950780 10164640 10226048 10703360 10865176 11271680 11372320 11823868 12417344 12782560 13393408 13512992 13581470 14230496 14357554 14608640 14779835 14984704 15384320 15521680 15921248 16263424 16741760 16891240 17212160 17788120 18195712 18730880 19901560 20329280 20452096 21730352 22744640 23647736 24834688 25565120 27025984 27162940 28460992 28715108 29217280 29559670 30768640 31043360 31842496 32526848 33483520 33782480 34424320 35576240 35893885 36391424 37461760 39803120 40658560 40904192 43460704 45489280 47295472 49669376 50251439 51130240 54051968 54325880 56921984 57430216 59119340 62086720 63684992 66967040 67564960 71152480 71787770 74923520 79606240 81317120 86921408 90978560 94590944 99338752 100502878 102260480 108103936 108651760 113843968 114860432 118238680 124173440 127369984 135129920 142304960 143575540 159212480 162634240 173842816 181957120 189181888 201005756 204520960 216207872 217303520 227687936 229720864 236477360 248346880 251257195 254739968 270259840 284609920 287151080 318424960 347685632 378363776 402011512 434607040 459441728 472954720 496693760 502514390 540519680 569219840 574302160 636849920 695371264 756727552 804023024 869214080 918883456 945909440 1005028780 1081039360 1138439680 1148604320 1273699840 1513455104 1608046048 1738428160 1837766912 1891818880 2010057560 2297208640 3216092096 3476856320 3675533824 3783637760 4020115120 4594417280 6432184192 7567275520 8040230240 9188834560 12864368384 16080460480 18377669120 25728736768 32160920960 64321841920 128643683840
• Sum of all divisors σ(n): 390551217408
• Sum of proper divisors (its aliquot sum) s(n): 261907533568
• 128643683840 is an abundant number, because the sum of its proper divisors (261907533568) is greater than itself. Its abundance is 133263849728

Bases of 128643683840

• Binary: 1110111110011110000101101011000000000₂
• Hexadecimal: 0x1DF3C2D600
• Base-36: 1N3J4LQ8

Squares and roots of 128643683840

• 128643683840 squared (128643683840²) is 16549197391925877145600
• 128643683840 cubed (128643683840³) is 2128949717092665108233248047104000
• The square root of 128643683840 is 358669.3238067621
• The cube root of 128643683840 is 5048.1178993011

Scales and comparisons

• 128,643,683,840 seconds is equal to 4,090 years, 24 weeks, 3 days, 12 hours, 37 minutes, 20 seconds.
• To count from 1 to 128,643,683,840 would take you about eight thousand, one hundred eighty 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 128643683840 cubic inches would be around 420.7 feet tall.

Recreational maths with 128643683840

• 128643683840 backwards is 048386346821
• The number of decimal digits it has is: 12
• The sum of 128643683840's digits is 53
• More coming soon!