21291732800

Names of 21291732800

• Cardinal: 21291732800 can be written as Twenty-one billion, two hundred ninety-one million, seven hundred thirty-two thousand, eight hundred.

Scientific notation

• Scientific notation: 2.12917328 × 10¹⁰

Factors of 21291732800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 351

Divisors of 21291732800

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 61 64 65 80 97 100 104 122 130 160 173 194 200 208 244 260 305 320 325 346 388 400 416 485 488 520 610 650 692 776 793 800 832 865 970 976 1040 1220 1261 1300 1384 1525 1552 1586 1600 1730 1940 1952 2080 2249 2425 2440 2522 2600 2768 3050 3104 3172 3460 3880 3904 3965 4160 4325 4498 4850 4880 5044 5200 5536 5917 6100 6208 6305 6344 6920 7760 7930 8650 8996 9700 9760 10088 10400 10553 11072 11245 11834 12200 12610 12688 13840 15520 15860 16781 17300 17992 19400 19520 19825 20176 20800 21106 22490 23668 24400 25220 25376 27680 29585 31040 31525 31720 33562 34600 35984 38800 39650 40352 42212 44980 47336 48800 50440 50752 52765 55360 56225 59170 63050 63440 67124 69200 71968 76921 77600 79300 80704 83905 84424 89960 94672 97600 100880 105530 112450 118340 126100 126880 134248 137189 138400 143936 147925 153842 155200 158600 167810 168848 179920 189344 201760 211060 218153 224900 236680 252200 253760 263825 268496 274378 276800 295850 307684 317200 335620 337696 359840 378688 384605 403520 419525 422120 436306 449800 473360 504400 527650 536992 548756 591700 615368 634400 671240 675392 685945 719680 769210 839050 844240 872612 899600 946720 1008800 1023641 1055300 1073984 1090765 1097512 1183400 1230736 1268800 1342480 1371890 1538420 1678100 1688480 1745224 1799200 1893440 1923025 2017600 2047282 2110600 2181530 2195024 2366800 2461472 2684960 2743780 3076840 3356200 3376960 3429725 3490448 3598400 3846050 4094564 4221200 4363060 4390048 4733600 4922944 5118205 5369920 5453825 5487560 6153680 6712400 6859450 6980896 7692100 8189128 8442400 8726120 8780096 9467200 10236410 10907650 10975120 12307360 13307333 13424800 13718900 13961792 15384200 16378256 16884800 17452240 20472820 21815300 21950240 24614720 25591025 26614666 26849600 27437800 30768400 32756512 34904480 40945640 43630600 43900480 51182050 53229332 54875600 61536800 65513024 66536665 69808960 81891280 87261200 102364100 106458664 109751200 123073600 133073330 163782560 174522400 204728200 212917328 219502400 266146660 327565120 332683325 349044800 409456400 425834656 532293320 665366650 818912800 851669312 1064586640 1330733300 1637825600 2129173280 2661466600 4258346560 5322933200 10645866400 21291732800
• Sum of all divisors σ(n): 58272072432
• Sum of proper divisors (its aliquot sum) s(n): 36980339632
• 21291732800 is an abundant number, because the sum of its proper divisors (36980339632) is greater than itself. Its abundance is 15688606832

Bases of 21291732800

• Binary: 10011110101000101100000111101000000₂
• Hexadecimal: 0x4F5160F40
• Base-36: 9S4JQ68

Squares and roots of 21291732800

• 21291732800 squared (21291732800²) is 453337885626595840000
• 21291732800 cubed (21291732800³) is 9652349128878439198871552000000
• The square root of 21291732800 is 145916.8694839633
• The cube root of 21291732800 is 2771.6411618955

Scales and comparisons

• 21,291,732,800 seconds is equal to 677 years, 4 days, 2 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,291,732,800 would take you about one thousand, three hundred fifty-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 21291732800 cubic inches would be around 231 feet tall.

Recreational maths with 21291732800

• 21291732800 backwards is 00823719212
• The number of decimal digits it has is: 11
• The sum of 21291732800's digits is 35
• More coming soon!