21421639680

Names of 21421639680

• Cardinal: 21421639680 can be written as Twenty-one billion, four hundred twenty-one million, six hundred thirty-nine thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.142163968 × 10¹⁰

Factors of 21421639680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 143

Divisors of 21421639680

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 19 20 21 24 28 30 32 35 38 40 42 48 49 56 57 60 64 70 76 80 84 95 96 98 105 107 112 114 120 128 133 140 147 152 160 168 190 192 196 210 214 224 228 240 245 256 266 280 285 294 304 320 321 336 343 380 384 392 399 420 428 448 456 480 490 512 532 535 560 570 588 608 640 642 665 672 686 735 749 760 768 784 798 840 856 896 912 931 960 980 1024 1029 1064 1070 1120 1140 1176 1216 1280 1284 1330 1344 1372 1470 1498 1520 1536 1568 1596 1605 1680 1712 1715 1792 1824 1862 1920 1960 1995 2033 2048 2058 2128 2140 2240 2247 2280 2352 2432 2560 2568 2660 2688 2744 2793 2940 2996 3040 3072 3136 3192 3210 3360 3424 3430 3584 3648 3724 3745 3840 3920 3990 4066 4116 4256 4280 4480 4494 4560 4655 4704 4864 5120 5136 5145 5243 5320 5376 5488 5586 5880 5992 6080 6099 6144 6272 6384 6420 6517 6720 6848 6860 7168 7296 7448 7490 7680 7840 7980 8132 8232 8512 8560 8960 8988 9120 9310 9408 9728 10165 10240 10272 10290 10486 10640 10752 10976 11172 11235 11760 11984 12160 12198 12544 12768 12840 13034 13440 13696 13720 13965 14231 14336 14592 14896 14980 15360 15680 15729 15960 16264 16464 17024 17120 17920 17976 18240 18620 18816 19456 19551 20330 20544 20580 20972 21280 21504 21952 22344 22470 23520 23968 24320 24396 25088 25536 25680 26068 26215 26880 27392 27440 27930 28462 29184 29792 29960 30495 30720 31360 31458 31920 32528 32585 32928 34048 34240 35840 35952 36480 36701 37240 37632 38912 39102 40660 41088 41160 41944 42560 42693 43008 43904 44688 44940 47040 47936 48640 48792 50176 51072 51360 52136 52430 53760 54784 54880 55860 56924 58368 59584 59920 60990 62720 62916 63840 65056 65170 65856 68096 68480 71155 71680 71904 72960 73402 74480 75264 78204 78645 81320 82176 82320 83888 85120 85386 87808 89376 89880 94080 95872 97280 97584 97755 99617 100352 102144 102720 104272 104860 107520 109568 109760 110103 111720 113848 116736 119168 119840 121980 125440 125832 127680 130112 130340 131712 136192 136960 142310 143808 145920 146804 148960 150528 156408 157290 162640 164352 164640 167776 170240 170772 175616 178752 179760 183505 188160 191744 194560 195168 195510 199234 204288 205440 208544 209720 213465 215040 219136 219520 220206 223440 227696 238336 239680 243960 250880 251664 255360 260224 260680 263424 272384 273920 284620 287616 291840 293608 297920 298851 301056 312816 314580 325280 328704 329280 335552 340480 341544 351232 357504 359520 367010 376320 383488 390336 391020 398468 408576 410880 417088 419440 426930 439040 440412 446880 455392 476672 479360 487920 498085 501760 503328 510720 520448 521360 526848 547840 550515 569240 575232 583680 587216 595840 597702 625632 629160 650560 657408 658560 671104 680960 683088 697319 702464 715008 719040 734020 752640 766976 780672 782040 796936 817152 821760 834176 838880 853860 878080 880824 893760 910784 953344 958720 975840 996170 1006656 1021440 1040896 1042720 1053696 1095680 1101030 1138480 1150464 1174432 1191680 1195404 1251264 1258320 1301120 1317120 1342208 1361920 1366176 1394638 1430016 1438080 1468040 1494255 1505280 1533952 1561344 1564080 1593872 1643520 1668352 1677760 1707720 1756160 1761648 1787520 1821568 1906688 1917440 1951680 1992340 2013312 2042880 2081792 2085440 2091957 2107392 2202060 2276960 2300928 2348864 2383360 2390808 2502528 2516640 2602240 2634240 2684416 2732352 2789276 2860032 2876160 2936080 2988510 3122688 3128160 3187744 3287040 3336704 3355520 3415440 3486595 3512320 3523296 3575040 3643136 3834880 3903360 3984680 4026624 4085760 4163584 4170880 4183914 4404120 4553920 4601856 4697728 4766720 4781616 5005056 5033280 5204480 5268480 5368832 5464704 5578552 5720064 5752320 5872160 5977020 6245376 6256320 6375488 6673408 6711040 6830880 6973190 7046592 7150080 7286272 7669760 7806720 7969360 8053248 8341760 8367828 8808240 9107840 9395456 9533440 9563232 10010112 10066560 10408960 10459785 10536960 10737664 10929408 11157104 11504640 11744320 11954040 12490752 12512640 12750976 13346816 13422080 13661760 13946380 14093184 14300160 14572544 15613440 15938720 16106496 16683520 16735656 17616480 18215680 18790912 19126464 20020224 20133120 20817920 20919570 21858816 22314208 23009280 23488640 23908080 25025280 25501952 26844160 27323520 27892760 28186368 28600320 29145088 31226880 31877440 32212992 33367040 33471312 35232960 36431360 37581824 38252928 40040448 40266240 41839140 43717632 44628416 46977280 47816160 50050560 51003904 53688320 54647040 55785520 56372736 62453760 63754880 66734080 66942624 70465920 72862720 75163648 76505856 80532480 83678280 87435264 89256832 93954560 95632320 100101120 102007808 109294080 111571040 112745472 127509760 133885248 140931840 145725440 153011712 161064960 167356560 178513664 187909120 191264640 200202240 204015616 218588160 223142080 225490944 255019520 267770496 281863680 306023424 334713120 357027328 375818240 382529280 437176320 446284160 510039040 535540992 563727360 612046848 669426240 714054656 765058560 892568320 1020078080 1071081984 1127454720 1338852480 1428109312 1530117120 1785136640 2142163968 2677704960 3060234240 3570273280 4284327936 5355409920 7140546560 10710819840 21421639680
• Sum of all divisors σ(n): 84913920000
• Sum of proper divisors (its aliquot sum) s(n): 63492280320
• 21421639680 is an abundant number, because the sum of its proper divisors (63492280320) is greater than itself. Its abundance is 42070640640

Bases of 21421639680

• Binary: 10011111100110101000100100000000000₂
• Hexadecimal: 0x4FCD44800
• Base-36: 9U9W2YO

Squares and roots of 21421639680

• 21421639680 squared (21421639680²) is 458886646579750502400
• 21421639680 cubed (21421639680³) is 9830104396994919646711775232000
• The square root of 21421639680 is 146361.3325984699
• The cube root of 21421639680 is 2777.2665919617

Scales and comparisons

• 21,421,639,680 seconds is equal to 681 years, 7 weeks, 2 days, 15 hours, 28 minutes.
• To count from 1 to 21,421,639,680 would take you about one thousand, three hundred sixty-two 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 21421639680 cubic inches would be around 231.4 feet tall.

Recreational maths with 21421639680

• 21421639680 backwards is 08693612412
• 21421639680 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21421639680's digits is 42
• More coming soon!