21360978720

Names of 21360978720

• Cardinal: 21360978720 can be written as Twenty-one billion, three hundred sixty million, nine hundred seventy-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.136097872 × 10¹⁰

Factors of 21360978720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1483

Divisors of 21360978720

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 27 30 32 34 36 40 45 48 51 54 60 68 72 80 85 90 96 102 108 120 135 136 144 153 160 170 180 204 216 239 240 255 270 272 288 306 340 360 408 432 459 478 480 510 540 544 612 680 717 720 765 816 864 918 956 1020 1080 1195 1217 1224 1360 1434 1440 1530 1632 1836 1912 2040 2151 2160 2295 2390 2434 2448 2720 2868 3060 3585 3651 3672 3824 4063 4080 4302 4320 4590 4780 4868 4896 5736 6085 6120 6453 7170 7302 7344 7648 8126 8160 8604 9180 9560 9736 10755 10953 11472 12170 12189 12240 12906 14340 14604 14688 16252 17208 18255 18360 19120 19472 20315 20689 21510 21906 22944 24340 24378 24480 25812 28680 29208 32265 32504 32859 34416 36510 36567 36720 38240 38944 40630 41378 43020 43812 48680 48756 51624 54765 57360 58416 60945 62067 64530 65008 65718 68832 73020 73134 73440 81260 82756 86040 87624 97360 97512 103248 103445 109530 109701 114720 116832 121890 124134 129060 130016 131436 146040 146268 162520 164295 165512 172080 175248 182835 186201 194720 195024 206496 206890 219060 219402 243780 248268 258120 262872 290863 292080 292536 310335 325040 328590 331024 344160 350496 365670 372402 390048 413780 438120 438804 487560 496536 516240 525744 548505 558603 581726 584160 585072 620670 650080 657180 662048 731340 744804 827560 872589 876240 877608 931005 975120 993072 1032480 1051488 1097010 1117206 1163452 1170144 1241340 1314360 1454315 1462680 1489608 1655120 1745178 1752480 1755216 1862010 1950240 1986144 2194020 2234412 2326904 2482680 2617767 2628720 2793015 2908630 2925360 2979216 3310240 3490356 3510432 3724020 4362945 4388040 4468824 4653808 4944671 4965360 5235534 5257440 5586030 5817260 5850720 5958432 6980712 7448040 7853301 8725890 8776080 8937648 9307616 9889342 9930720 10471068 11172060 11634520 13088835 13961424 14834013 14896080 15706602 17451780 17552160 17875296 19778684 20942136 22344120 23269040 24723355 26177670 27922848 29668026 29792160 31413204 34903560 39266505 39557368 41884272 44502039 44688240 46538080 49446710 52355340 59336052 62826408 69807120 74170065 78533010 79114736 83768544 89004078 89376480 98893420 104710680 118672104 125652816 133506117 139614240 148340130 157066020 158229472 178008156 197786840 209421360 222510195 237344208 251305632 267012234 296680260 314132040 356016312 395573680 418842720 445020390 474688416 534024468 593360520 628264080 667530585 712032624 791147360 890040780 1068048936 1186721040 1256528160 1335061170 1424065248 1780081560 2136097872 2373442080 2670122340 3560163120 4272195744 5340244680 7120326240 10680489360 21360978720
• Sum of all divisors σ(n): 79557811200
• Sum of proper divisors (its aliquot sum) s(n): 58196832480
• 21360978720 is an abundant number, because the sum of its proper divisors (58196832480) is greater than itself. Its abundance is 36835853760

Bases of 21360978720

• Binary: 10011111001001101101010101100100000₂
• Hexadecimal: 0x4F936AB20
• Base-36: 9T9RWO0

Squares and roots of 21360978720

• 21360978720 squared (21360978720²) is 456291411876292838400
• 21360978720 cubed (21360978720³) is 9746831139208246593550798848000
• The square root of 21360978720 is 146153.9555400401
• The cube root of 21360978720 is 2774.6425953143

Scales and comparisons

• 21,360,978,720 seconds is equal to 679 years, 11 weeks, 13 hours, 12 minutes.
• To count from 1 to 21,360,978,720 would take you about one thousand, three hundred fifty-eight 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 21360978720 cubic inches would be around 231.2 feet tall.

Recreational maths with 21360978720

• 21360978720 backwards is 02787906312
• 21360978720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21360978720's digits is 45
• More coming soon!