21436978640

Names of 21436978640

• Cardinal: 21436978640 can be written as Twenty-one billion, four hundred thirty-six million, nine hundred seventy-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.143697864 × 10¹⁰

Factors of 21436978640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 164

Divisors of 21436978640

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 28 29 31 35 40 44 49 55 56 58 62 70 77 79 80 88 98 110 112 116 124 140 145 154 155 158 176 196 203 217 220 232 245 248 280 290 308 310 316 319 341 343 385 392 395 406 434 440 464 490 496 539 553 560 580 616 620 632 638 682 686 770 784 790 812 868 869 880 899 980 1015 1078 1085 1106 1160 1232 1240 1264 1276 1364 1372 1421 1519 1540 1580 1595 1624 1705 1715 1736 1738 1798 1960 2030 2156 2170 2212 2233 2291 2320 2387 2449 2480 2552 2695 2728 2744 2765 2842 3038 3080 3160 3190 3248 3410 3430 3472 3476 3596 3773 3871 3920 4060 4312 4340 4345 4424 4466 4495 4582 4774 4898 5104 5390 5456 5488 5530 5684 6076 6083 6160 6293 6320 6380 6820 6860 6952 7105 7192 7546 7595 7742 8120 8624 8680 8690 8848 8932 8990 9164 9548 9796 9889 9947 10633 10780 11060 11165 11368 11455 11935 12152 12166 12245 12586 12760 13640 13720 13904 14210 14384 15092 15190 15484 15631 16037 16240 16709 17143 17360 17380 17864 17980 18328 18865 19096 19355 19592 19778 19894 21266 21560 22120 22330 22736 22910 23870 24304 24332 24490 25172 25201 25520 26939 27097 27280 27440 28420 30184 30380 30415 30968 31262 31465 32074 33418 34286 34760 35728 35960 36656 37730 38192 38710 39184 39556 39788 42532 42581 43120 44051 44240 44660 45820 47740 48664 48980 49445 49735 50344 50402 53165 53878 54194 56840 60368 60760 60830 61936 62524 62930 64148 66836 68572 69223 69520 71021 71920 75460 77420 78155 79112 79576 80185 83545 85064 85162 85715 88102 89320 91640 95480 97328 97960 98890 99470 100688 100804 106330 107756 108388 109417 112259 113680 116963 120001 121520 121660 125048 125860 126005 128296 133672 134695 135485 137144 138446 142042 150920 154840 156310 158224 159152 160370 167090 170128 170324 171430 176204 176407 178640 183280 188573 190960 195920 197780 198940 201608 212660 212905 215512 216776 218834 220255 224518 233926 240002 243320 250096 251720 252010 256592 267344 269390 270970 274288 276892 284084 298067 301840 308357 309680 312620 320740 334180 340648 342860 346115 352408 352814 355105 377146 395560 397880 403216 425320 425810 431024 433552 437668 440510 449036 467852 480004 484561 486640 497147 503440 504020 538780 541940 547085 553784 561295 568168 584815 596134 600005 616714 625240 641480 668360 681296 685720 692230 704816 705628 710210 754292 781231 785813 791120 795760 840007 850640 851620 875336 881020 882035 898072 935704 942865 960008 969122 994294 1008040 1077560 1083880 1094170 1107568 1122590 1136336 1169630 1192268 1200010 1233428 1234849 1250480 1282960 1320011 1336720 1371440 1384460 1411256 1420420 1490335 1508584 1541785 1562462 1571626 1680014 1703240 1750672 1762040 1764070 1796144 1871408 1885730 1920016 1938244 1988588 2016080 2155120 2167760 2188340 2245180 2339260 2384536 2400020 2422805 2466856 2469698 2485735 2640022 2768920 2822512 2840840 2980670 3017168 3083570 3124924 3143252 3360028 3391927 3406480 3480029 3524080 3528140 3771460 3876488 3906155 3929065 3977176 4200035 4376680 4490360 4678520 4769072 4800040 4845610 4933712 4939396 4971470 5280044 5468617 5537840 5681680 5961340 6167140 6174245 6249848 6286504 6600055 6720056 6783854 6960058 7056280 7542920 7752976 7812310 7858130 7954352 8400070 8643943 8753360 8980720 9240077 9357040 9600080 9691220 9878792 9942940 10560088 10937234 11922680 12334280 12348490 12499696 12573008 13200110 13440112 13567708 13920116 14112560 15085840 15624620 15716260 16800140 16959635 17287886 17400145 18480154 19382440 19757584 19885880 21120176 21874468 23845360 24360203 24668560 24696980 26400220 27135416 27343085 27840232 31249240 31432520 33600280 33919270 34575772 34800290 36960308 38280319 38764880 39771760 43219715 43748936 46200385 48720406 49393960 52800440 54270832 54686170 55680464 62498480 62865040 67200560 67838540 69151544 69600580 73920616 76560638 86439430 87497872 92400770 97440812 98787920 105600880 109372340 121801015 135677080 138303088 139201160 147841232 153121276 172878860 184801540 191401595 194881624 218744680 243602030 267962233 271354160 278402320 306242552 345757720 369603080 382803190 389763248 437489360 487204060 535924466 612485104 691515440 739206160 765606380 974408120 1071848932 1339811165 1531212760 1948816240 2143697864 2679622330 3062425520 4287395728 5359244660 10718489320 21436978640
• Sum of all divisors σ(n): 68567040000
• Sum of proper divisors (its aliquot sum) s(n): 47130061360
• 21436978640 is an abundant number, because the sum of its proper divisors (47130061360) is greater than itself. Its abundance is 25693082720

Bases of 21436978640

• Binary: 10011111101101111100101010111010000₂
• Hexadecimal: 0x4FDBE55D0
• Base-36: 9UJ0UKW

Squares and roots of 21436978640

• 21436978640 squared (21436978640²) is 459544053211816249600
• 21436978640 cubed (21436978640³) is 9851236052840728338280108544000
• The square root of 21436978640 is 146413.7242201017
• The cube root of 21436978640 is 2777.9293208323

Scales and comparisons

• 21,436,978,640 seconds is equal to 681 years, 32 weeks, 5 days, 4 hours, 17 minutes, 20 seconds.
• To count from 1 to 21,436,978,640 would take you about one thousand, three hundred sixty-three 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 21436978640 cubic inches would be around 231.5 feet tall.

Recreational maths with 21436978640

• 21436978640 backwards is 04687963412
• The number of decimal digits it has is: 11
• The sum of 21436978640's digits is 50
• More coming soon!