128002801920

Names of 128002801920

• Cardinal: 128002801920 can be written as One hundred twenty-eight billion, two million, eight hundred one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2800280192 × 10¹¹

Factors of 128002801920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 9409

Divisors of 128002801920

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 49 56 60 64 70 73 80 84 96 98 105 112 120 128 140 146 147 160 168 192 196 210 219 224 240 245 256 280 292 294 320 336 365 384 392 420 438 448 480 490 511 560 584 588 640 672 730 735 768 784 840 876 896 960 980 1022 1095 1120 1168 1176 1280 1344 1460 1470 1533 1568 1680 1752 1792 1920 1960 2044 2190 2240 2336 2352 2555 2688 2920 2940 3066 3136 3360 3504 3577 3840 3920 4088 4380 4480 4672 4704 5110 5376 5840 5880 6132 6272 6720 7008 7154 7665 7840 8176 8760 8960 9319 9344 9408 10220 10731 11680 11760 12264 12544 13440 14016 14308 15330 15680 16352 17520 17885 18638 18688 18816 20440 21462 23360 23520 24528 26880 27957 28032 28616 30660 31360 32704 35040 35770 37276 37632 40880 42924 46595 46720 47040 49056 53655 55914 56064 57232 61320 62720 65233 65408 70080 71540 74552 81760 85848 93190 93440 94080 98112 107310 111828 114464 122640 130466 130816 139785 140160 143080 149104 163520 171696 186380 188160 195699 196224 214620 223656 228928 245280 260932 279570 280320 286160 298208 326165 327040 343392 372760 391398 392448 429240 447312 456631 457856 490560 521864 559140 572320 596416 652330 654080 680287 686784 745520 782796 858480 894624 913262 915712 978495 981120 1043728 1118280 1144640 1192832 1304660 1360574 1369893 1373568 1491040 1565592 1716960 1789248 1826524 1956990 1962240 2040861 2087456 2236560 2283155 2289280 2385664 2609320 2721148 2739786 2747136 2982080 3131184 3401435 3433920 3578496 3653048 3913980 4081722 4174912 4473120 4566310 4578560 4762009 5218640 5442296 5479572 5964160 6262368 6802870 6849465 6867840 7156992 7306096 7827960 8163444 8349824 8946240 9132620 9524018 10204305 10437280 10884592 10959144 11928320 12524736 13605740 13698930 13735680 14286027 14612192 15655920 16326888 16699648 17892480 18265240 19048036 20408610 20874560 21769184 21918288 23810045 25049472 27211480 27397860 28572054 29224384 31311840 32653776 33334063 35784960 36530480 38096072 40817220 41749120 43538368 43836576 47620090 50098944 54422960 54795720 57144108 58448768 62623680 65307552 66668126 71430135 73060960 76192144 81634440 83498240 87076736 87673152 95240180 100002189 108845920 109591440 114288216 116897536 125247360 130615104 133336252 142860270 146121920 152384288 163268880 166670315 174153472 175346304 190480360 200004378 217691840 219182880 228576432 250494720 261230208 266672504 285720540 292243840 304768576 326537760 333340630 350692608 380960720 400008756 435383680 438365760 457152864 500010945 522460416 533345008 571441080 584487680 609537152 653075520 666681260 761921440 800017512 870767360 876731520 914305728 1000021890 1066690016 1142882160 1219074304 1306151040 1333362520 1523842880 1600035024 1753463040 1828611456 2000043780 2133380032 2285764320 2612302080 2666725040 3047685760 3200070048 3657222912 4000087560 4266760064 4571528640 5333450080 6095371520 6400140096 8000175120 8533520128 9143057280 10666900160 12800280192 16000350240 18286114560 21333800320 25600560384 32000700480 42667600640 64001400960 128002801920
• Sum of all divisors σ(n): 482119424640
• Sum of proper divisors (its aliquot sum) s(n): 354116622720
• 128002801920 is an abundant number, because the sum of its proper divisors (354116622720) is greater than itself. Its abundance is 226113820800

Bases of 128002801920

• Binary: 1110111001101100011111100000100000000₂
• Hexadecimal: 0x1DCD8FC100
• Base-36: 1MSXKA2O

Squares and roots of 128002801920

• 128002801920 squared (128002801920²) is 16384717299370755686400
• 128002801920 cubed (128002801920³) is 2097289722986552180766972837888000
• The square root of 128002801920 is 357774.7921807795
• The cube root of 128002801920 is 5039.7209722069

Scales and comparisons

• 128,002,801,920 seconds is equal to 4,070 years, 4 weeks, 5 days, 21 hours, 52 minutes.
• To count from 1 to 128,002,801,920 would take you about eight thousand, one hundred forty 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 128002801920 cubic inches would be around 420 feet tall.

Recreational maths with 128002801920

• 128002801920 backwards is 029108200821
• The number of decimal digits it has is: 12
• The sum of 128002801920's digits is 33
• More coming soon!