129321395840

Names of 129321395840

• Cardinal: 129321395840 can be written as One hundred twenty-nine billion, three hundred twenty-one million, three hundred ninety-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.2932139584 × 10¹¹

Factors of 129321395840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1904

Divisors of 129321395840

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 49 52 56 64 65 70 80 91 98 104 112 128 130 140 160 169 182 196 208 224 245 260 280 320 338 364 392 416 448 455 490 520 560 637 640 676 728 784 832 845 896 910 980 1040 1120 1183 1274 1352 1456 1568 1664 1690 1820 1877 1960 2080 2197 2240 2366 2548 2704 2912 3136 3185 3380 3640 3754 3920 4160 4394 4480 4732 5096 5408 5824 5915 6272 6370 6760 7280 7508 7840 8281 8320 8788 9385 9464 10192 10816 10985 11648 11830 12740 13139 13520 14560 15016 15379 15680 16562 17576 18770 18928 20384 21632 21970 23660 24401 25480 26278 27040 29120 30032 30758 31360 33124 35152 37540 37856 40768 41405 43940 47320 48802 50960 52556 54080 58240 60064 61516 65695 66248 70304 75080 75712 76895 81536 82810 87880 91973 94640 97604 101920 105112 107653 108160 120128 122005 123032 131390 132496 140608 150160 151424 153790 165620 170807 175760 183946 189280 195208 203840 210224 215306 240256 244010 246064 262780 264992 281216 300320 307580 317213 331240 341614 351520 367892 378560 390416 407680 420448 430612 459865 488020 492128 525560 529984 538265 600640 615160 634426 662480 683228 703040 735784 757120 780832 840896 854035 861224 919730 976040 984256 1051120 1059968 1076530 1195649 1201280 1230320 1268852 1324960 1366456 1406080 1471568 1561664 1586065 1681792 1708070 1722448 1839460 1952080 1968512 2102240 2153060 2220491 2391298 2460640 2537704 2649920 2732912 2943136 3123328 3172130 3416140 3444896 3678920 3904160 4123769 4204480 4306120 4440982 4782596 4921280 5075408 5299840 5465824 5886272 5978245 6344260 6832280 6889792 7357840 7808320 8247538 8408960 8612240 8881964 9565192 9842560 10150816 10931648 11102455 11772544 11956490 12688520 13664560 13779584 14715680 15543437 15616640 16495076 17224480 17763928 19130384 20301632 20618845 21863296 22204910 23912980 25377040 27329120 28866383 29431360 31086874 32990152 34448960 35527856 38260768 40603264 41237690 44409820 47825960 50754080 54658240 57732766 58862720 62173748 65980304 68897920 71055712 76521536 77717185 82475380 88819640 95651920 101508160 109316480 115465532 124347496 131960608 142111424 144331915 153043072 155434370 164950760 177639280 191303840 202064681 203016320 230931064 248694992 263921216 284222848 288663830 310868740 329901520 355278560 382607680 404129362 461862128 497389984 527842432 577327660 621737480 659803040 710557120 765215360 808258724 923724256 994779968 1010323405 1154655320 1243474960 1319606080 1421114240 1616517448 1847448512 1989559936 2020646810 2309310640 2486949920 2639212160 3233034896 3694897024 4041293620 4618621280 4973899840 6466069792 8082587240 9237242560 9947799680 12932139584 16165174480 18474485120 25864279168 32330348960 64660697920 129321395840
• Sum of all divisors σ(n): 389797304400
• Sum of proper divisors (its aliquot sum) s(n): 260475908560
• 129321395840 is an abundant number, because the sum of its proper divisors (260475908560) is greater than itself. Its abundance is 131154512720

Bases of 129321395840

• Binary: 1111000011100001001111110011010000000₂
• Hexadecimal: 0x1E1C27E680
• Base-36: 1NEQMBNK

Squares and roots of 129321395840

• 129321395840 squared (129321395840²) is 16724023422005969305600
• 129321395840 cubed (129321395840³) is 2162774052994665323412387528704000
• The square root of 129321395840 is 359612.8415949575
• The cube root of 129321395840 is 5056.9670962233

Scales and comparisons

• 129,321,395,840 seconds is equal to 4,112 years, 1 week, 9 hours, 57 minutes, 20 seconds.
• To count from 1 to 129,321,395,840 would take you about eight thousand, two hundred twenty-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 129321395840 cubic inches would be around 421.4 feet tall.

Recreational maths with 129321395840

• 129321395840 backwards is 048593123921
• The number of decimal digits it has is: 12
• The sum of 129321395840's digits is 47
• More coming soon!