129210086720

Names of 129210086720

• Cardinal: 129210086720 can be written as One hundred twenty-nine billion, two hundred ten million, eighty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2921008672 × 10¹¹

Factors of 129210086720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 824

Divisors of 129210086720

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 19 20 22 26 32 38 40 44 52 55 64 65 76 80 88 95 104 110 130 143 152 160 176 190 208 209 220 247 260 286 304 320 352 353 380 416 418 421 440 494 520 572 608 704 706 715 760 832 836 842 880 988 1040 1045 1144 1216 1235 1412 1430 1520 1672 1684 1760 1765 1976 2080 2090 2105 2288 2470 2717 2824 2860 3040 3344 3368 3520 3530 3883 3952 4160 4180 4210 4576 4589 4631 4940 5434 5473 5648 5720 6080 6688 6707 6736 7060 7766 7904 7999 8360 8420 9152 9178 9262 9880 10868 10946 11296 11440 13376 13414 13472 13585 14120 15532 15808 15998 16720 16840 18356 18524 19415 19760 21736 21892 22592 22880 22945 23155 26828 26944 27170 27365 28240 31064 31996 33440 33535 33680 36712 37048 38830 39520 39995 43472 43784 45760 45890 46310 50479 53656 54340 54730 56480 60203 62128 63992 66880 67070 67360 73424 73777 74096 77660 79040 79990 86944 87191 87568 87989 91780 92620 100958 103987 107312 108680 109460 112960 120406 124256 127984 134140 134720 146848 147554 148192 148613 155320 159980 173888 174382 175136 175978 183560 185240 201916 207974 214624 217360 218920 240812 248512 252395 255968 268280 293696 295108 296384 297226 301015 310640 319960 348764 350272 351956 367120 368885 370480 403832 415948 429248 434720 435955 437840 439945 481624 504790 511936 519935 536560 590216 594452 602030 621280 639920 697528 703912 734240 737770 740960 743065 807664 831896 869440 871910 875680 879890 959101 963248 1009580 1039870 1073120 1143857 1180432 1188904 1204060 1242560 1279840 1395056 1407824 1468480 1475540 1481920 1486130 1615328 1634743 1663792 1743820 1751360 1759780 1918202 1926496 1931969 2019160 2079740 2146240 2287714 2360864 2377808 2408120 2559680 2790112 2815648 2823647 2951080 2972260 3230656 3269486 3327584 3487640 3519560 3836404 3852992 3863938 4038320 4159480 4575428 4721728 4755616 4795505 4816240 5580224 5631296 5647294 5719285 5902160 5944520 6538972 6655168 6975280 7039120 7672808 7727876 8076640 8173715 8318960 9150856 9511232 9591010 9632480 9659845 11294588 11438570 11804320 11889040 13077944 13950560 14078240 14118235 15345616 15455752 16153280 16347430 16637920 18301712 19182020 19264960 19319690 21251659 22589176 22877140 23608640 23778080 26155888 27901120 28156480 28236470 30691232 30911504 31060117 32694860 33275840 36603424 36707411 38364040 38639380 42503318 45178352 45754280 47556160 52311776 56472940 61382464 61823008 62120234 65389720 73206848 73414822 76728080 77278760 85006636 90356704 91508560 104623552 106258295 112945880 123646016 124240468 130779440 146829644 153456160 154557520 155300585 170013272 180713408 183017120 183537055 212516590 225891760 248480936 261558880 293659288 306912320 309115040 310601170 340026544 366034240 367074110 403781521 425033180 451783520 496961872 523117760 587318576 618230080 621202340 680053088 734148220 807563042 850066360 903567040 993923744 1174637152 1242404680 1360106176 1468296440 1615126084 1700132720 1987847488 2018907605 2349274304 2484809360 2936592880 3230252168 3400265440 4037815210 4969618720 5873185760 6460504336 6800530880 8075630420 9939237440 11746371520 12921008672 16151260840 25842017344 32302521680 64605043360 129210086720
• Sum of all divisors σ(n): 382481084160
• Sum of proper divisors (its aliquot sum) s(n): 253270997440
• 129210086720 is an abundant number, because the sum of its proper divisors (253270997440) is greater than itself. Its abundance is 124060910720

Bases of 129210086720

• Binary: 1111000010101100001010111010101000000₂
• Hexadecimal: 0x1E15857540
• Base-36: 1NCWCKZK

Squares and roots of 129210086720

• 129210086720 squared (129210086720²) is 16695246510189920358400
• 129210086720 cubed (129210086720³) is 2157194249393416973178757480448000
• The square root of 129210086720 is 359458.0458412357
• The cube root of 129210086720 is 5055.5158072951

Scales and comparisons

• 129,210,086,720 seconds is equal to 4,108 years, 25 weeks, 2 hours, 45 minutes, 20 seconds.
• To count from 1 to 129,210,086,720 would take you about eight thousand, two hundred sixteen 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 129210086720 cubic inches would be around 421.3 feet tall.

Recreational maths with 129210086720

• 129210086720 backwards is 027680012921
• 129210086720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 129210086720's digits is 38
• More coming soon!