21813765120

Names of 21813765120

• Cardinal: 21813765120 can be written as Twenty-one billion, eight hundred thirteen million, seven hundred sixty-five thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.181376512 × 10¹⁰

Factors of 21813765120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 9678

Divisors of 21813765120

• Number of divisors d(n): 396
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 49 56 60 63 64 70 72 80 84 90 96 98 105 112 120 126 128 140 144 147 160 168 180 192 196 210 224 240 245 252 256 280 288 294 315 320 336 360 384 392 420 441 448 480 490 504 512 560 576 588 630 640 672 720 735 768 784 840 882 896 960 980 1008 1024 1120 1152 1176 1260 1280 1344 1440 1470 1536 1568 1680 1764 1792 1920 1960 2016 2205 2240 2304 2352 2520 2560 2688 2880 2940 3072 3136 3360 3528 3584 3840 3920 4032 4410 4480 4608 4704 5040 5120 5376 5760 5880 6272 6720 7056 7168 7680 7840 8064 8820 8960 9216 9408 9661 10080 10752 11520 11760 12544 13440 14112 15360 15680 16128 17640 17920 18816 19322 20160 21504 23040 23520 25088 26880 28224 28983 31360 32256 35280 35840 37632 38644 40320 46080 47040 48305 50176 53760 56448 57966 62720 64512 67627 70560 75264 77288 80640 86949 94080 96610 107520 112896 115932 125440 135254 141120 144915 150528 154576 161280 173898 188160 193220 202881 225792 231864 250880 270508 282240 289830 309152 322560 338135 347796 376320 386440 405762 434745 451584 463728 473389 541016 564480 579660 608643 618304 676270 695592 752640 772880 811524 869490 927456 946778 1014405 1082032 1128960 1159320 1217286 1236608 1352540 1391184 1420167 1545760 1623048 1738980 1854912 1893556 2028810 2164064 2257920 2318640 2366945 2434572 2473216 2705080 2782368 2840334 3043215 3091520 3246096 3477960 3709824 3787112 4057620 4260501 4328128 4637280 4733890 4869144 4946432 5410160 5564736 5680668 6086430 6183040 6492192 6955920 7100835 7419648 7574224 8115240 8521002 8656256 9274560 9467780 9738288 9892864 10820320 11129472 11361336 12172860 12366080 12984384 13911840 14201670 14839296 15148448 16230480 17042004 17312512 18549120 18935560 19476576 21302505 21640640 22258944 22722672 24345720 24732160 25968768 27823680 28403340 29678592 30296896 32460960 34084008 34625024 37098240 37871120 38953152 42605010 43281280 44517888 45445344 48691440 49464320 51937536 55647360 56806680 60593792 64921920 68168016 69250048 74196480 75742240 77906304 85210020 86562560 89035776 90890688 97382880 103875072 111294720 113613360 121187584 129843840 136336032 148392960 151484480 155812608 170420040 173125120 181781376 194765760 207750144 222589440 227226720 242375168 259687680 272672064 302968960 311625216 340840080 346250240 363562752 389531520 445178880 454453440 484750336 519375360 545344128 605937920 623250432 681680160 727125504 779063040 908906880 1038750720 1090688256 1211875840 1363360320 1454251008 1558126080 1817813760 2181376512 2423751680 2726720640 3116252160 3635627520 4362753024 5453441280 7271255040 10906882560 21813765120
• Sum of all divisors σ(n): 87933494844
• Sum of proper divisors (its aliquot sum) s(n): 66119729724
• 21813765120 is an abundant number, because the sum of its proper divisors (66119729724) is greater than itself. Its abundance is 44305964604

Bases of 21813765120

• Binary: 10100010100001100111010010000000000₂
• Hexadecimal: 0x51433A400
• Base-36: A0RCOW0

Squares and roots of 21813765120

• 21813765120 squared (21813765120²) is 475840348710528614400
• 21813765120 cubed (21813765120³) is 10379869601390366065560649728000
• The square root of 21813765120 is 147694.8378244819
• The cube root of 21813765120 is 2794.1102865229

Scales and comparisons

• 21,813,765,120 seconds is equal to 693 years, 31 weeks, 5 days, 3 hours, 12 minutes.
• To count from 1 to 21,813,765,120 would take you about one thousand, three hundred eighty-seven 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 21813765120 cubic inches would be around 232.8 feet tall.

Recreational maths with 21813765120

• 21813765120 backwards is 02156731812
• 21813765120 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21813765120's digits is 36
• More coming soon!