21536835840

Names of 21536835840

• Cardinal: 21536835840 can be written as Twenty-one billion, five hundred thirty-six million, eight hundred thirty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.153683584 × 10¹⁰

Factors of 21536835840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 4693

Divisors of 21536835840

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 31 32 36 39 40 45 48 52 60 62 64 65 72 78 80 90 93 96 104 117 120 124 128 130 144 155 156 160 180 186 192 195 208 234 240 248 256 260 279 288 310 312 320 360 372 384 390 403 416 465 468 480 496 520 558 576 585 620 624 640 720 744 768 780 806 832 930 936 960 992 1040 1116 1152 1170 1209 1240 1248 1280 1395 1440 1488 1560 1612 1664 1860 1872 1920 1984 2015 2080 2232 2304 2340 2418 2480 2496 2790 2880 2976 3120 3224 3328 3627 3720 3744 3840 3968 4030 4160 4464 4639 4680 4836 4960 4992 5580 5760 5952 6045 6240 6448 7254 7440 7488 7936 8060 8320 8928 9278 9360 9672 9920 9984 11160 11520 11904 12090 12480 12896 13917 14508 14880 14976 16120 16640 17856 18135 18556 18720 19344 19840 22320 23195 23808 24180 24960 25792 27834 29016 29760 29952 32240 35712 36270 37112 37440 38688 39680 41751 44640 46390 48360 49920 51584 55668 58032 59520 60307 64480 69585 71424 72540 74224 74880 77376 83502 89280 92780 96720 103168 111336 116064 119040 120614 128960 139170 143809 145080 148448 149760 154752 167004 178560 180921 185560 193440 208755 222672 232128 241228 257920 278340 287618 290160 296896 301535 309504 334008 357120 361842 371120 386880 417510 431427 445344 464256 482456 515840 542763 556680 575236 580320 593792 603070 668016 719045 723684 742240 773760 835020 862854 890688 904605 928512 964912 1085526 1113360 1150472 1160640 1187584 1206140 1294281 1336032 1438090 1447368 1484480 1547520 1670040 1725708 1781376 1809210 1869517 1929824 2157135 2171052 2226720 2300944 2321280 2412280 2588562 2672064 2713815 2876180 2894736 2968960 3340080 3451416 3562752 3618420 3739034 3859648 4314270 4342104 4453440 4601888 4642560 4824560 5177124 5344128 5427630 5608551 5752360 5789472 5937920 6471405 6680160 6902832 7236840 7478068 7719296 8628540 8684208 8906880 9203776 9347585 9649120 10354248 10688256 10855260 11217102 11504720 11578944 12942810 13360320 13805664 14473680 14956136 15438592 16825653 17257080 17368416 17813760 18407552 18695170 19298240 20708496 21710520 22434204 23009440 23157888 25885620 26720640 27611328 28042755 28947360 29912272 33651306 34514160 34736832 36815104 37390340 38596480 41416992 43421040 44868408 46018880 46315776 51771240 53441280 55222656 56085510 57894720 59824544 67302612 69028320 69473664 74780680 77192960 82833984 84128265 86842080 89736816 92037760 103542480 110445312 112171020 115789440 119649088 134605224 138056640 138947328 149561360 165667968 168256530 173684160 179473632 184075520 207084960 224342040 231578880 239298176 269210448 276113280 299122720 331335936 336513060 347368320 358947264 414169920 448684080 478596352 538420896 552226560 598245440 673026120 694736640 717894528 828339840 897368160 1076841792 1196490880 1346052240 1435789056 1656679680 1794736320 2153683584 2392981760 2692104480 3589472640 4307367168 5384208960 7178945280 10768417920 21536835840
• Sum of all divisors σ(n): 82853621760
• Sum of proper divisors (its aliquot sum) s(n): 61316785920
• 21536835840 is an abundant number, because the sum of its proper divisors (61316785920) is greater than itself. Its abundance is 39779950080

Bases of 21536835840

• Binary: 10100000011101100100000100100000000₂
• Hexadecimal: 0x503B20900
• Base-36: 9W6H4W0

Squares and roots of 21536835840

• 21536835840 squared (21536835840²) is 463835297999108505600
• 21536835840 cubed (21536835840³) is 9989544669804280351454920704000
• The square root of 21536835840 is 146754.3384026517
• The cube root of 21536835840 is 2782.2360010401

Scales and comparisons

• 21,536,835,840 seconds is equal to 684 years, 41 weeks, 5 days, 22 hours, 24 minutes.
• To count from 1 to 21,536,835,840 would take you about one thousand, three hundred sixty-nine 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 21536835840 cubic inches would be around 231.9 feet tall.

Recreational maths with 21536835840

• 21536835840 backwards is 04853863512
• 21536835840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21536835840's digits is 45
• More coming soon!