2121804720

Names of 2121804720

• Cardinal: 2121804720 can be written as Two billion, one hundred twenty-one million, eight hundred four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.12180472 × 10⁹

Factors of 2121804720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1659

Divisors of 2121804720

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 29 30 35 36 40 42 45 48 54 56 58 60 63 70 72 80 81 84 87 90 105 108 112 116 120 126 135 140 144 145 162 168 174 180 189 203 210 216 232 240 252 261 270 280 290 315 324 336 348 360 378 405 406 420 432 435 464 504 522 540 560 567 580 609 630 648 696 720 756 783 810 812 840 870 945 1008 1015 1044 1080 1134 1160 1218 1260 1296 1305 1392 1512 1566 1613 1620 1624 1680 1740 1827 1890 2030 2088 2160 2268 2320 2349 2436 2520 2610 2835 3024 3045 3132 3226 3240 3248 3480 3654 3780 3915 4060 4176 4536 4698 4839 4872 5040 5220 5481 5670 6090 6264 6452 6480 6960 7308 7560 7830 8065 8120 9072 9135 9396 9678 9744 10440 10962 11291 11340 11745 12180 12528 12904 14517 14616 15120 15660 16130 16240 16443 18270 18792 19356 20880 21924 22582 22680 23490 24195 24360 25808 27405 29034 29232 31320 32260 32886 33873 36540 37584 38712 43551 43848 45164 45360 46777 46980 48390 48720 54810 56455 58068 62640 64520 65772 67746 72585 73080 77424 82215 87102 87696 90328 93554 93960 96780 101619 109620 112910 116136 129040 130653 131544 135492 140331 145170 146160 164430 169365 174204 180656 187108 187920 193560 203238 217755 219240 225820 232272 233885 261306 263088 270984 280662 290340 304857 327439 328860 338730 348408 374216 387120 406476 420993 435510 438480 451640 467770 508095 522612 541968 561324 580680 609714 653265 654878 657720 677460 696816 701655 748432 812952 841986 871020 903280 914571 935540 982317 1016190 1045224 1122648 1161360 1219428 1262979 1306530 1309756 1315440 1354920 1403310 1524285 1625904 1637195 1683972 1742040 1829142 1871080 1964634 2032380 2090448 2104965 2245296 2438856 2525958 2613060 2619512 2709840 2806620 2946951 3048570 3274390 3367944 3484080 3658284 3742160 3788937 3929268 4064760 4209930 4572855 4877712 4911585 5051916 5226120 5239024 5613240 5893902 6097140 6314895 6548780 6735888 7316568 7577874 7858536 8129520 8419860 8840853 9145710 9823170 10103832 10452240 11226480 11787804 12194280 12629790 13097560 14633136 14734755 15155748 15717072 16839720 17681706 18291420 18944685 19646340 20207664 23575608 24388560 25259580 26195120 26522559 29469510 30311496 33679440 35363412 36582840 37889370 39292680 44204265 47151216 50519160 53045118 58939020 60622992 70726824 73165680 75778740 78585360 88408530 101038320 106090236 117878040 132612795 141453648 151557480 176817060 212180472 235756080 265225590 303114960 353634120 424360944 530451180 707268240 1060902360 2121804720
• Sum of all divisors σ(n): 8717924160
• Sum of proper divisors (its aliquot sum) s(n): 6596119440
• 2121804720 is an abundant number, because the sum of its proper divisors (6596119440) is greater than itself. Its abundance is 4474314720

Bases of 2121804720

• Binary: 1111110011110000010101110110000₂
• Hexadecimal: 0x7E782BB0
• Base-36: Z39N00

Squares and roots of 2121804720

• 2121804720 squared (2121804720²) is 4502055269814278400
• 2121804720 cubed (2121804720³) is 9552482121192809432514048000
• The square root of 2121804720 is 46063.0515706459
• The cube root of 2121804720 is 1284.9960826943

Scales and comparisons

• 2,121,804,720 seconds is equal to 67 years, 24 weeks, 1 day, 22 hours, 12 minutes.
• To count from 1 to 2,121,804,720 would take you about one hundred thirty-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 2121804720 cubic inches would be around 107.1 feet tall.

Recreational maths with 2121804720

• 2121804720 backwards is 0274081212
• 2121804720 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 2121804720's digits is 27
• More coming soon!