81326810400

Names of 81326810400

• Cardinal: 81326810400 can be written as Eighty-one billion, three hundred twenty-six million, eight hundred ten thousand, four hundred.

Scientific notation

• Scientific notation: 8.13268104 × 10¹⁰

Factors of 81326810400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4673

Divisors of 81326810400

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 25 30 32 33 40 44 48 50 55 60 61 66 75 80 88 96 100 110 120 121 122 132 150 160 165 176 183 200 220 240 242 244 264 275 300 305 330 352 363 366 400 440 480 484 488 528 550 600 605 610 660 671 726 732 800 825 880 915 968 976 1056 1100 1200 1210 1220 1320 1342 1452 1464 1525 1650 1760 1815 1830 1936 1952 2013 2200 2400 2420 2440 2640 2684 2904 2928 3025 3050 3300 3355 3630 3660 3872 4026 4400 4575 4591 4840 4880 5280 5368 5808 5856 6050 6100 6600 6710 7260 7320 7381 8052 8800 9075 9150 9182 9680 9760 10065 10736 11616 12100 12200 13200 13420 13773 14520 14640 14762 16104 16775 18150 18300 18364 19360 20130 21472 22143 22955 24200 24400 26400 26840 27546 29040 29280 29524 32208 33550 36300 36600 36728 36905 40260 44286 45910 48400 48800 50325 50501 53680 55092 58080 59048 64416 67100 68865 72600 73200 73456 73810 80520 88572 91820 96800 100650 101002 107360 110184 110715 114775 118096 134200 137730 145200 146400 146912 147620 151503 161040 177144 183640 184525 201300 202004 220368 221430 229550 236192 252505 268400 275460 280051 290400 295240 303006 322080 344325 354288 367280 369050 402600 404008 440736 442860 459100 505010 536800 550920 553575 555511 560102 590480 606012 688650 708576 734560 738100 757515 805200 808016 840153 885720 918200 1010020 1101840 1107150 1111022 1120204 1180960 1212024 1262525 1377300 1400255 1476200 1515030 1610400 1616032 1666533 1680306 1771440 1836400 2020040 2203680 2214300 2222044 2240408 2424048 2525050 2754600 2777555 2800510 2952400 3030060 3080561 3333066 3360612 3542880 3672800 3787575 4040080 4200765 4428600 4444088 4480816 4848096 5050100 5509200 5555110 5601020 5904800 6060120 6161122 6666132 6721224 7001275 7575150 8080160 8332665 8401530 8857200 8888176 8961632 9241683 10100200 11018400 11110220 11202040 12120240 12322244 13332264 13442448 13887775 14002550 15150300 15402805 16665330 16803060 17714400 17776352 18483366 20200400 21003825 22220440 22404080 24240480 24644488 26664528 26884896 27775550 28005100 30300600 30805610 33330660 33606120 33886171 36966732 40400800 41663325 42007650 44440880 44808160 46208415 49288976 53329056 55551100 56010200 60601200 61611220 66661320 67212240 67772342 73933464 77014025 83326650 84015300 88881760 92416830 98577952 101658513 111102200 112020400 121202400 123222440 133322640 134424480 135544684 147866928 154028050 166653300 168030600 169430855 184833660 203317026 222204400 224040800 231042075 246444880 266645280 271089368 295733856 308056100 333306600 336061200 338861710 369667320 406634052 444408800 462084150 492889760 508292565 542178736 616112200 666613200 672122400 677723420 739334640 813268104 847154275 924168300 1016585130 1084357472 1232224400 1333226400 1355446840 1478669280 1626536208 1694308550 1848336600 2033170260 2464448800 2541462825 2710893680 3253072416 3388617100 3696673200 4066340520 5082925650 5421787360 6777234200 7393346400 8132681040 10165851300 13554468400 16265362080 20331702600 27108936800 40663405200 81326810400
• Sum of all divisors σ(n): 295806317184
• Sum of proper divisors (its aliquot sum) s(n): 214479506784
• 81326810400 is an abundant number, because the sum of its proper divisors (214479506784) is greater than itself. Its abundance is 133152696384

Bases of 81326810400

• Binary: 1001011101111011101001010010100100000₂
• Hexadecimal: 0x12EF74A520
• Base-36: 11CZVSIO

Squares and roots of 81326810400

• 81326810400 squared (81326810400²) is 6614050089837548160000
• 81326810400 cubed (81326810400³) is 537899597632321246009188864000000
• The square root of 81326810400 is 285178.5588013237
• The cube root of 81326810400 is 4332.5599413985

Scales and comparisons

• 81,326,810,400 seconds is equal to 2,585 years, 48 weeks, 6 days, 12 hours, 40 minutes.
• To count from 1 to 81,326,810,400 would take you about five thousand, one hundred seventy-one 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 81326810400 cubic inches would be around 361 feet tall.

Recreational maths with 81326810400

• 81326810400 backwards is 00401862318
• 81326810400 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81326810400's digits is 33
• More coming soon!