21018680320

Names of 21018680320

• Cardinal: 21018680320 can be written as Twenty-one billion, eighteen million, six hundred eighty thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.101868032 × 10¹⁰

Factors of 21018680320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 821

Divisors of 21018680320

• Number of divisors d(n): 352
• Complete list of divisors:
  1 2 4 5 8 10 11 16 17 20 22 29 32 34 40 44 55 58 64 68 80 85 88 110 116 128 136 145 160 170 176 187 220 232 256 272 290 319 320 340 352 374 440 464 493 512 544 580 638 640 680 704 748 757 880 928 935 986 1024 1088 1160 1276 1280 1360 1408 1496 1514 1595 1760 1856 1870 1972 2176 2320 2465 2552 2560 2720 2816 2992 3028 3190 3520 3712 3740 3785 3944 4352 4640 4930 5104 5120 5423 5440 5632 5984 6056 6380 7040 7424 7480 7570 7888 8327 8704 9280 9860 10208 10846 10880 11264 11968 12112 12760 12869 14080 14848 14960 15140 15776 16654 17408 18560 19720 20416 21692 21760 21953 23936 24224 25520 25738 27115 28160 29696 29920 30280 31552 33308 37120 39440 40832 41635 43384 43520 43906 47872 48448 51040 51476 54230 56320 59840 60560 63104 64345 66616 74240 78880 81664 83270 86768 87040 87812 95744 96896 102080 102952 108460 109765 119680 121120 126208 128690 133232 141559 148480 157760 163328 166540 173536 175624 191488 193792 204160 205904 216920 219530 239360 241483 242240 252416 257380 266464 283118 315520 326656 333080 347072 351248 373201 387584 408320 411808 433840 439060 478720 482966 484480 504832 514760 532928 566236 631040 666160 694144 702496 707795 746402 775168 816640 823616 867680 878120 957440 965932 968960 1029520 1065856 1132472 1207415 1262080 1332320 1388288 1404992 1415590 1492804 1633280 1647232 1735360 1756240 1866005 1931864 1937920 2059040 2131712 2264944 2414830 2524160 2664640 2776576 2809984 2831180 2985608 3294464 3470720 3512480 3732010 3863728 3875840 4105211 4118080 4263424 4529888 4829660 5329280 5553152 5619968 5662360 5971216 6588928 6941440 7024960 7464020 7727456 8210422 8236160 8526848 9059776 9659320 10658560 11239936 11324720 11942432 13177856 13882880 14049920 14928040 15454912 16420844 16472320 18119552 19318640 20526055 21317120 22479872 22649440 23884864 27765760 28099840 29856080 30909824 32841688 32944640 36239104 38637280 41052110 42634240 45298880 47769728 56199680 59712160 61819648 65683376 65889280 72478208 77274560 82104220 90597760 95539456 112399360 119424320 123639296 131366752 144956416 154549120 164208440 181195520 191078912 238848640 247278592 262733504 309098240 328416880 362391040 382157824 477697280 525467008 618196480 656833760 724782080 955394560 1050934016 1236392960 1313667520 1910789120 2101868032 2627335040 4203736064 5254670080 10509340160 21018680320
• Sum of all divisors σ(n): 60327218880
• Sum of proper divisors (its aliquot sum) s(n): 39308538560
• 21018680320 is an abundant number, because the sum of its proper divisors (39308538560) is greater than itself. Its abundance is 18289858240

Bases of 21018680320

• Binary: 10011100100110011111001110000000000₂
• Hexadecimal: 0x4E4CF9C00
• Base-36: 9NLZ9J4

Squares and roots of 21018680320

• 21018680320 squared (21018680320²) is 441784922394355302400
• 21018680320 cubed (21018680320³) is 9285736054002963073642528768000
• The square root of 21018680320 is 144978.2063621977
• The cube root of 21018680320 is 2759.7419908647

Scales and comparisons

• 21,018,680,320 seconds is equal to 668 years, 17 weeks, 18 hours, 18 minutes, 40 seconds.
• To count from 1 to 21,018,680,320 would take you about one thousand, three hundred thirty-six 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 21018680320 cubic inches would be around 230 feet tall.

Recreational maths with 21018680320

• 21018680320 backwards is 02308681012
• The number of decimal digits it has is: 11
• The sum of 21018680320's digits is 31
• More coming soon!