21215009293920

Names of 21215009293920

• Cardinal: 21215009293920 can be written as Twenty-one trillion, two hundred fifteen billion, nine million, two hundred ninety-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.121500929392 × 10¹³

Factors of 21215009293920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 4878

Divisors of 21215009293920

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 32 36 39 40 45 48 52 54 60 65 67 72 78 80 90 96 104 108 117 120 130 134 135 144 156 160 180 195 201 208 216 234 240 260 268 270 288 312 335 351 360 390 402 416 432 468 480 520 536 540 585 603 624 670 702 720 780 804 864 871 936 1005 1040 1072 1080 1170 1206 1248 1340 1404 1440 1560 1608 1742 1755 1809 1872 2010 2080 2089 2144 2160 2340 2412 2613 2680 2699 2808 3015 3120 3216 3484 3510 3618 3744 4020 4178 4320 4355 4680 4824 5226 5360 5398 5616 6030 6240 6267 6432 6968 7020 7236 7839 8040 8097 8356 8710 9045 9360 9648 10445 10452 10720 10796 11232 12060 12534 13065 13495 13936 14040 14472 15678 16080 16194 16712 17420 18090 18720 18801 19296 20890 20904 21592 23517 24120 24291 25068 26130 26990 27157 27872 28080 28944 31335 31356 32160 32388 33424 34840 35087 36180 37602 39195 40485 41780 41808 43184 47034 48240 48582 50136 52260 53980 54314 56160 56403 57888 62670 62712 64776 66848 69680 70174 72360 72873 75204 78390 80970 81471 83560 83616 86368 94005 94068 96480 97164 100272 104520 105261 107960 108628 112806 117585 121455 125340 125424 129552 135785 139360 139963 140348 144720 145746 150408 156780 161940 162942 167120 175435 180833 188010 188136 194328 200544 209040 210522 215920 217256 225612 235170 242910 244413 250680 250848 259104 271570 279926 280696 282015 289440 291492 300816 313560 315783 323880 325884 334240 350870 361666 364365 376020 376272 388656 407355 418080 419889 421044 431840 434512 451224 470340 485820 488826 501360 526305 542499 543140 559852 561392 564030 582984 601632 627120 631566 647760 651768 699815 701740 723332 728730 733239 752040 752544 777312 814710 839778 842088 869024 902448 904165 940680 947349 971640 977652 1002720 1052610 1084998 1086280 1119704 1122784 1128060 1165968 1222065 1254240 1259667 1263132 1295520 1303536 1399630 1403480 1446664 1457460 1466478 1504080 1578915 1627497 1629420 1679556 1684176 1804896 1808330 1819519 1881360 1894698 1943280 1955304 2099445 2105220 2169996 2172560 2239408 2256120 2331936 2350829 2444130 2519334 2526264 2607072 2712495 2799260 2806960 2893328 2914920 2932956 3008160 3157830 3254994 3258840 3359112 3368352 3616660 3639038 3666195 3762720 3779001 3789396 3886560 3910608 4198890 4210440 4339992 4345120 4478816 4512240 4701658 4736745 4882491 4888260 5038668 5052528 5424990 5458557 5598520 5613920 5638211 5786656 5829840 5865912 6298335 6315660 6509988 6517680 6718224 7052487 7233320 7278076 7332390 7558002 7578792 7821216 8137485 8397780 8420880 8679984 9024480 9097595 9403316 9473490 9764982 9776520 10077336 10105056 10849980 10917114 11197040 11276422 11659680 11731824 11754145 12596670 12631320 13019976 13035360 13436448 14104974 14466640 14556152 14664780 15116004 15157584 16274970 16375671 16795560 16841760 16914633 17359968 18195190 18806632 18895005 18946980 19529964 19553040 20154672 21157461 21699960 21834228 22394080 22552844 23463648 23508290 24412455 25193340 25262640 26039952 27292785 28191055 28209948 28933280 29112304 29329560 30232008 30315168 32549940 32751342 33591120 33829266 35262435 36390380 37613264 37790010 37893960 39059928 39106080 40309344 42314922 43399920 43668456 45105688 47016580 48824910 49127013 50386680 50525280 50743899 52079904 54585570 56382110 56419896 58224608 58659120 60464016 63472383 65099880 65502684 67182240 67658532 70524870 72780760 73296743 75226528 75580020 75787920 78119856 81878355 84573165 84629844 86799840 87336912 90211376 94033160 97649820 98254026 100773360 101487798 105787305 109171140 112764220 112839792 117318240 120928032 126944766 130199760 131005368 135317064 141049740 145561520 146593486 151160040 151575840 152231697 156239712 163756710 169146330 169259688 174673824 180422752 188066320 195299640 196508052 201546720 202975596 211574610 218342280 219890229 225528440 225679584 245635065 253719495 253889532 260399520 262010736 270634128 282099480 291123040 293186972 302320080 304463394 317361915 327513420 338292660 338519376 366483715 376132640 377760137 390599280 393016104 405951192 423149220 436684560 439780458 451056880 491270130 507438990 507779064 524021472 541268256 564198960 586373944 604640160 608926788 634723830 655026840 659670687 676585320 677038752 732967430 755520274 761158485 781198560 786032208 811902384 846298440 873369120 879560916 902113760 982540260 1014877980 1015558128 1099451145 1128397920 1133280411 1172747888 1217853576 1269447660 1310053680 1319341374 1353170640 1465934860 1511040548 1522316970 1572064416 1623804768 1692596880 1759121832 1888800685 1965080520 1979012061 2029755960 2031116256 2198902290 2266560822 2345495776 2435707152 2538895320 2620107360 2638682748 2706341280 2931869720 3022081096 3044633940 3298353435 3385193760 3399841233 3518243664 3777601370 3930161040 3958024122 4059511920 4397804580 4533121644 4871414304 4910881781 5077790640 5277365496 5666402055 5863739440 6044162192 6089267880 6596706870 6799682466 7036487328 7555202740 7860322080 7916048244 8119023840 8795609160 9066243288 9821763562 9895060305 10155581280 10199523699 10554730992 11332804110 11727478880 12088324384 12178535760 13193413740 13599364932 14732645343 15110405480 15832096488 16999206165 17591218320 18132486576 19643527124 19790120610 20399047398 21109461984 22665608220 24357071520 24554408905 26386827480 27198729864 29465290686 30220810960 31664192976 33998412330 35182436640 36264973152 39287054248 39580241220 40798094796 44197936029 45331216440 49108817810 50997618495 52773654960 54397459728 58930581372 60441621920 63328385952 67996824660 73663226715 78574108496 79160482440 81596189592 88395872058 90662432880 98217635620 101995236990 105547309920 108794919456 117861162744 132593808087 135993649320 147326453430 157148216992 158320964880 163192379184 176791744116 181324865760 196435271240 203990473980 220989680145 235722325488 265187616174 271987298640 294652906860 316641929760 326384758368 353583488232 392870542480 407980947960 441979360290 471444650976 530375232348 543974597280 589305813720 662969040435 707166976464 785741084960 815961895920 883958720580 1060750464696 1178611627440 1325938080870 1414333952928 1631923791840 1767917441160 2121500929392 2357223254880 2651876161740 3535834882320 4243001858784 5303752323480 7071669764640 10607504646960 21215009293920
• Sum of all divisors σ(n): 81226696320000
• Sum of proper divisors (its aliquot sum) s(n): 60011687026080
• 21215009293920 is an abundant number, because the sum of its proper divisors (60011687026080) is greater than itself. Its abundance is 38796677732160

Bases of 21215009293920

• Binary: 100110100101110000001000101111100011001100000₂
• Hexadecimal: 0x134B8117C660
• Base-36: 7IQ1GS0O0

Squares and roots of 21215009293920

• 21215009293920 squared (21215009293920²) is 450076619341111976948966400
• 21215009293920 cubed (21215009293920³) is 9548379662297784617719746981537804288000
• The square root of 21215009293920 is 4605975.3900688615
• The cube root of 21215009293920 is 27683.0800647065

Scales and comparisons

• 21,215,009,293,920 seconds is equal to 674,571 years, 35 weeks, 1 hour, 12 minutes.
• To count from 1 to 21,215,009,293,920 would take you about one million, six hundred eighty-six thousand, four hundred twenty-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 21215009293920 cubic inches would be around 2306.9 feet tall.

Recreational maths with 21215009293920

• 21215009293920 backwards is 02939290051212
• 21215009293920 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21215009293920's digits is 45
• More coming soon!