21656138400

Names of 21656138400

• Cardinal: 21656138400 can be written as Twenty-one billion, six hundred fifty-six million, one hundred thirty-eight thousand, four hundred.

Scientific notation

• Scientific notation: 2.16561384 × 10¹⁰

Factors of 21656138400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 587

Divisors of 21656138400

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 27 30 32 36 39 40 45 48 50 52 54 60 65 72 75 78 80 90 96 100 104 108 117 120 130 135 144 150 156 160 180 195 200 208 216 225 233 234 240 260 270 288 300 312 325 331 351 360 390 400 416 432 450 466 468 480 520 540 585 600 624 650 662 675 699 702 720 780 800 864 900 932 936 975 993 1040 1080 1165 1170 1200 1248 1300 1324 1350 1398 1404 1440 1560 1655 1755 1800 1864 1872 1950 1986 2080 2097 2160 2330 2340 2400 2600 2648 2700 2796 2808 2925 2979 3029 3120 3310 3495 3510 3600 3728 3744 3900 3972 4194 4303 4320 4660 4680 4965 5200 5296 5400 5592 5616 5825 5850 5958 6058 6240 6291 6620 6990 7020 7200 7456 7800 7944 8275 8388 8606 8775 8937 9087 9320 9360 9930 10400 10485 10592 10800 11184 11232 11650 11700 11916 12116 12582 12909 13240 13980 14040 14895 15145 15600 15888 16550 16776 17212 17475 17550 17874 18174 18640 18720 19860 20970 21515 21600 22368 23300 23400 23832 24232 24825 25164 25818 26480 27261 27960 28080 29790 30290 31200 31455 31776 33100 33552 34424 34950 35100 35748 36348 37280 38727 39720 41940 43030 44685 45435 46600 46800 47664 48464 49650 50328 51636 52425 52960 54522 55920 56160 59580 60580 62910 64545 66200 67104 68848 69900 70200 71496 72696 74475 75725 77123 77454 79440 81783 83880 86060 89370 90870 93200 93600 95328 96928 99300 100656 103272 104850 107575 109044 111840 116181 119160 121160 125820 129090 132400 136305 137696 139800 140400 142992 145392 148950 151450 154246 154908 157275 158880 163566 167760 172120 178740 181740 186400 193635 198600 201312 206544 209700 215150 218088 223425 227175 231369 232362 238320 242320 251640 258180 264800 272610 279600 280800 285984 290784 297900 302900 308492 309816 314550 322725 327132 335520 344240 357480 363480 385615 387270 397200 408915 413088 419400 430300 436176 446850 454350 462738 464724 476640 484640 503280 516360 545220 559200 580905 595800 605800 616984 619632 629100 645450 654264 681525 688480 694107 714960 726960 771230 774540 794400 817830 838800 860600 872352 893700 908700 925476 929448 968175 1002599 1006560 1032720 1090440 1156845 1161810 1191600 1211600 1233968 1239264 1258200 1290900 1308528 1363050 1388214 1429920 1453920 1542460 1549080 1635660 1677600 1721200 1787400 1817400 1850952 1858896 1928075 1936350 2005198 2044575 2065440 2082321 2180880 2313690 2323620 2383200 2423200 2467936 2516400 2581800 2617056 2726100 2776428 2904525 3007797 3084920 3098160 3271320 3442400 3470535 3574800 3634800 3701904 3717792 3856150 3872700 4010396 4089150 4164642 4361760 4627380 4647240 5012995 5032800 5163600 5452200 5552856 5784225 5809050 6015594 6169840 6196320 6542640 6941070 7149600 7269600 7403808 7712300 7745400 8020792 8178300 8329284 9023391 9254760 9294480 10025990 10327200 10411605 10904400 11105712 11568450 11618100 12031188 12339680 13085280 13882140 15038985 15424600 15490800 16041584 16356600 16658568 17352675 18046782 18509520 18588960 20051980 20823210 21808800 22211424 23136900 23236200 24062376 25064975 27070173 27764280 30077970 30849200 30981600 32083168 32713200 33317136 34705350 36093564 37019040 40103960 41646420 45116955 46273800 46472400 48124752 50129950 52058025 54140346 55528560 60155940 61698400 65426400 66634272 69410700 72187128 75194925 80207920 83292840 90233910 92547600 92944800 96249504 100259900 104116050 108280692 111057120 120311880 135350865 138821400 144374256 150389850 160415840 166585680 180467820 185095200 200519800 208232100 216561384 225584775 240623760 270701730 277642800 288748512 300779700 333171360 360935640 401039600 416464200 433122768 451169550 481247520 541403460 555285600 601559400 676754325 721871280 802079200 832928400 866245536 902339100 1082806920 1203118800 1353508650 1443742560 1665856800 1804678200 2165613840 2406237600 2707017300 3609356400 4331227680 5414034600 7218712800 10828069200 21656138400
• Sum of all divisors σ(n): 84965811840
• Sum of proper divisors (its aliquot sum) s(n): 63309673440
• 21656138400 is an abundant number, because the sum of its proper divisors (63309673440) is greater than itself. Its abundance is 41653535040

Bases of 21656138400

• Binary: 10100001010110011100111001010100000₂
• Hexadecimal: 0x50ACE72A0
• Base-36: 9Y5I7C0

Squares and roots of 21656138400

• 21656138400 squared (21656138400²) is 468988330399954560000
• 21656138400 cubed (21656138400³) is 10156476191126343305071104000000
• The square root of 21656138400 is 147160.2473496155
• The cube root of 21656138400 is 2787.3639108555

Scales and comparisons

• 21,656,138,400 seconds is equal to 688 years, 31 weeks, 18 hours.
• To count from 1 to 21,656,138,400 would take you about one thousand, three hundred seventy-seven 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 21656138400 cubic inches would be around 232.3 feet tall.

Recreational maths with 21656138400

• 21656138400 backwards is 00483165612
• 21656138400 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21656138400's digits is 36
• More coming soon!