21266139840

Names of 21266139840

• Cardinal: 21266139840 can be written as Twenty-one billion, two hundred sixty-six million, one hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.126613984 × 10¹⁰

Factors of 21266139840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 406

Divisors of 21266139840

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 101 110 120 127 132 157 160 165 176 192 202 220 240 254 264 303 314 320 330 352 381 404 440 471 480 505 508 528 606 628 635 660 704 762 785 808 880 942 960 1010 1016 1056 1111 1212 1256 1270 1320 1397 1515 1524 1570 1616 1727 1760 1884 1905 2020 2032 2112 2222 2355 2424 2512 2540 2640 2794 3030 3048 3140 3232 3333 3454 3520 3768 3810 4040 4064 4191 4444 4710 4848 5024 5080 5181 5280 5555 5588 6060 6096 6280 6464 6666 6908 6985 7536 7620 8080 8128 8382 8635 8888 9420 9696 10048 10160 10362 10560 11110 11176 12120 12192 12560 12827 13332 13816 13970 15072 15240 15857 16160 16665 16764 17270 17776 18840 19392 19939 20320 20724 20955 22220 22352 24240 24384 25120 25654 25905 26664 27632 27940 30144 30480 31714 32320 33330 33528 34540 35552 37680 38481 39878 40640 41448 41910 44440 44704 47571 48480 50240 51308 51810 53328 55264 55880 59817 60960 63428 64135 66660 67056 69080 71104 75360 76962 79285 79756 82896 83820 88880 89408 95142 96960 99695 102616 103620 106656 110528 111760 119634 121920 126856 128270 133320 134112 138160 141097 150720 153924 158570 159512 165792 167640 174427 177760 190284 192405 199390 205232 207240 213312 219329 223520 237855 239268 253712 256540 266640 268224 276320 282194 299085 307848 317140 319024 331584 335280 348854 355520 380568 384810 398780 410464 414480 423291 438658 447040 475710 478536 507424 513080 523281 533280 552640 564388 598170 615696 634280 638048 657987 670560 697708 705485 761136 769620 797560 820928 828960 846582 872135 877316 951420 957072 1014848 1026160 1046562 1066560 1096645 1128776 1196340 1231392 1268560 1276096 1315974 1341120 1395416 1410970 1522272 1539240 1595120 1657920 1693164 1744270 1754632 1902840 1914144 2013839 2052320 2093124 2116455 2193290 2257552 2392680 2462784 2537120 2616405 2631948 2790832 2821940 3044544 3078480 3190240 3289935 3386328 3488540 3509264 3805680 3828288 4027678 4104640 4186248 4232910 4386580 4515104 4785360 5074240 5232810 5263896 5581664 5643880 6041517 6156960 6380480 6579870 6772656 6977080 7018528 7611360 8055356 8372496 8465820 8773160 9030208 9570720 10069195 10465620 10527792 11163328 11287760 12083034 12313920 13159740 13545312 13954160 14037056 15222720 16110712 16744992 16931640 17546320 19141440 20138390 20931240 21055584 22152229 22575520 24166068 26319480 27090624 27908320 30207585 32221424 33489984 33863280 35092640 40276780 41862480 42111168 44304458 45151040 48332136 52638960 55816640 60415170 64442848 66456687 67726560 70185280 80553560 83724960 88608916 96664272 105277920 110761145 120830340 128885696 132913374 135453120 161107120 167449920 177217832 193328544 210555840 221522290 241660680 265826748 322214240 332283435 354435664 386657088 443044580 483321360 531653496 644428480 664566870 708871328 886089160 966642720 1063306992 1329133740 1417742656 1772178320 1933285440 2126613984 2658267480 3544356640 4253227968 5316534960 7088713280 10633069920 21266139840
• Sum of all divisors σ(n): 75450728448
• Sum of proper divisors (its aliquot sum) s(n): 54184588608
• 21266139840 is an abundant number, because the sum of its proper divisors (54184588608) is greater than itself. Its abundance is 32918448768

Bases of 21266139840

• Binary: 10011110011100011111000101011000000₂
• Hexadecimal: 0x4F38F8AC0
• Base-36: 9RPB6IO

Squares and roots of 21266139840

• 21266139840 squared (21266139840²) is 452248703694435225600
• 21266139840 cubed (21266139840³) is 9617584175224584137431547904000
• The square root of 21266139840 is 145829.1460579811
• The cube root of 21266139840 is 2770.5301995253

Scales and comparisons

• 21,266,139,840 seconds is equal to 676 years, 10 weeks, 1 day, 21 hours, 4 minutes.
• To count from 1 to 21,266,139,840 would take you about one thousand, three hundred fifty-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 21266139840 cubic inches would be around 230.9 feet tall.

Recreational maths with 21266139840

• 21266139840 backwards is 04893166212
• The number of decimal digits it has is: 11
• The sum of 21266139840's digits is 42
• More coming soon!