21370128780

Names of 21370128780

• Cardinal: 21370128780 can be written as Twenty-one billion, three hundred seventy million, one hundred twenty-eight thousand, seven hundred eighty.

Scientific notation

• Scientific notation: 2.137012878 × 10¹⁰

Factors of 21370128780

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 428

Divisors of 21370128780

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 13 14 15 19 20 21 22 26 28 30 33 35 38 39 42 44 52 55 57 60 61 65 66 70 76 77 78 84 91 95 105 110 114 122 130 132 133 140 143 154 156 165 182 183 190 195 209 210 220 228 231 244 247 260 266 273 285 286 305 307 308 330 364 366 380 385 390 399 418 420 427 429 455 462 494 532 546 570 572 610 614 627 660 665 671 715 732 741 770 780 793 798 836 854 858 910 915 921 924 988 1001 1045 1092 1140 1155 1159 1220 1228 1235 1254 1281 1330 1342 1365 1430 1463 1482 1535 1540 1586 1596 1708 1716 1729 1820 1830 1842 1995 2002 2013 2090 2135 2145 2149 2310 2318 2379 2470 2508 2562 2660 2684 2717 2730 2860 2926 2964 3003 3070 3135 3172 3355 3377 3458 3477 3660 3684 3705 3965 3990 3991 4004 4026 4180 4270 4290 4298 4389 4605 4620 4636 4697 4758 4940 5005 5124 5187 5434 5460 5551 5795 5833 5852 6006 6140 6270 6405 6447 6710 6754 6916 6954 7315 7410 7930 7980 7982 8052 8113 8151 8540 8580 8596 8645 8723 8778 9210 9394 9516 10010 10065 10131 10374 10745 10868 11102 11590 11666 11895 11973 12012 12540 12749 12810 12894 13420 13508 13585 13908 14091 14630 14820 15015 15067 15860 15964 16226 16302 16653 16885 17290 17385 17446 17499 17556 18420 18727 18788 19019 19955 20020 20130 20262 20748 21490 21945 22204 23180 23332 23485 23639 23790 23946 24339 25498 25620 25788 25935 26169 27170 27755 27937 28182 29165 29260 30030 30134 32235 32452 32604 33306 33770 34580 34770 34892 34998 37454 38038 38247 39910 40260 40524 40565 40755 40831 42980 43615 43890 43901 45201 46970 47278 47580 47892 48678 50655 50996 51870 52338 54340 55510 55874 56181 56364 57057 58330 59865 60060 60268 61061 63745 64163 64470 66612 67540 69540 69996 70455 70917 74908 75335 75829 76076 76494 79820 81130 81510 81662 83265 83811 87230 87495 87780 87802 89243 90402 93635 93940 94556 95095 97356 101310 103740 104676 105469 111020 111748 112362 114114 116660 118195 119730 121695 122122 122493 127490 128326 128940 130845 131089 131703 139685 140910 141834 150670 151658 152988 162260 163020 163324 165737 166530 167622 174460 174990 175604 178486 180804 183183 187270 190190 191235 192489 202620 204155 205997 210938 219505 224724 226005 227487 228228 236390 239460 243390 243451 244244 244986 254980 256652 261690 262178 263406 267729 279370 280905 281820 283668 285285 301340 303316 305305 307307 316407 320815 331474 333060 335244 349980 354585 355813 356972 366366 374540 379145 380380 382470 384978 393267 408310 411994 419055 421876 439010 446215 449141 452010 454974 472780 486780 486902 489972 497211 523380 524356 526812 527345 530803 535458 558740 561810 570570 610610 612465 614614 617991 632814 641630 655445 658515 662948 709170 711626 730353 732732 758290 764940 769956 786534 816620 823988 828685 834119 838110 878020 892430 898282 904020 909948 915915 921921 962445 973804 994422 1029985 1054690 1061606 1067439 1070916 1123620 1137435 1141140 1160159 1217255 1221220 1224930 1229228 1235982 1265628 1283260 1310890 1317030 1338645 1347423 1418340 1423252 1441979 1460706 1516580 1536535 1573068 1582035 1592409 1657370 1668238 1676220 1704157 1779065 1784860 1796564 1831830 1843842 1924890 1966335 1988844 2059970 2109380 2123212 2134878 2245705 2274870 2320318 2434510 2449860 2471964 2486055 2490691 2502357 2621780 2634060 2654015 2677290 2677961 2694846 2883958 2921412 3073070 3089955 3164070 3184818 3314740 3336476 3408314 3480477 3558130 3651765 3663660 3687684 3849780 3913943 3932670 4119940 4170595 4269756 4325937 4491410 4549740 4609605 4625569 4640636 4869020 4972110 4981382 5004714 5112471 5308030 5337195 5354580 5355922 5389692 5767916 5800795 5838833 6146140 6179910 6328140 6369636 6737115 6816628 6960954 7116260 7209895 7303530 7472073 7827886 7865340 7962045 8033883 8341190 8520785 8651874 8982820 9219210 9251138 9944220 9962764 10009428 10224942 10616060 10674390 10711844 11601590 11677666 11741829 12359820 12453455 12511785 13389805 13474230 13876707 13921908 14419790 14607060 14944146 15655772 15924090 16067766 16682380 17041570 17303748 17402385 17516499 18438420 18502276 18745727 19569715 20449884 21348780 21629685 23127845 23203180 23355332 23483658 24906910 25023570 25562355 26779610 26948460 27397601 27753414 28839580 29194165 29888292 31848180 32135532 32378983 34083140 34804770 35032998 37360365 37491454 39139430 40169415 43259370 46255690 46967316 49813820 50047140 50881259 51124710 53559220 54795202 55506828 56237181 58388330 58709145 64757966 69383535 69609540 70065996 74720730 74982908 78278860 80338830 82192803 86518740 87582495 92511380 93728635 97136949 101762518 102249420 109590404 112474362 116776660 117418290 129515932 136988005 138767070 149441460 152643777 160677660 161894915 164385606 175164990 187457270 194273898 203525036 224948724 234836580 254406295 273976010 277534140 281185905 305287554 323789830 328771212 350329980 356168813 374914540 388547796 410964015 485684745 508812590 547952020 562371810 610575108 647579660 712337626 763218885 821928030 971369490 1017625180 1068506439 1124743620 1424675252 1526437770 1643856060 1780844065 1942738980 2137012878 3052875540 3561688130 4274025756 5342532195 7123376260 10685064390 21370128780
• Sum of all divisors σ(n): 86234480640
• Sum of proper divisors (its aliquot sum) s(n): 64864351860
• 21370128780 is an abundant number, because the sum of its proper divisors (64864351860) is greater than itself. Its abundance is 43494223080

Bases of 21370128780

• Binary: 10011111001110000100100100110001100₂
• Hexadecimal: 0x4F9C2498C
• Base-36: 9TF80WC

Squares and roots of 21370128780

• 21370128780 squared (21370128780²) is 456682404073784288400
• 21370128780 cubed (21370128780³) is 9759361786616766865048660152000
• The square root of 21370128780 is 146185.2550020009
• The cube root of 21370128780 is 2775.0387151485

Scales and comparisons

• 21,370,128,780 seconds is equal to 679 years, 26 weeks, 1 day, 10 hours, 53 minutes.
• To count from 1 to 21,370,128,780 would take you about one thousand, three hundred fifty-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 21370128780 cubic inches would be around 231.3 feet tall.

Recreational maths with 21370128780

• 21370128780 backwards is 08782107312
• 21370128780 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21370128780's digits is 39
• More coming soon!