21385368576

Names of 21385368576

• Cardinal: 21385368576 can be written as Twenty-one billion, three hundred eighty-five million, three hundred sixty-eight thousand, five hundred seventy-six.

Scientific notation

• Scientific notation: 2.1385368576 × 10¹⁰

Factors of 21385368576

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 630

Divisors of 21385368576

• Number of divisors d(n): 528
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 27 32 33 36 39 44 48 52 54 64 66 72 78 81 88 96 99 104 108 117 128 132 143 144 156 162 176 192 198 208 216 234 243 256 264 286 288 297 312 324 351 352 384 396 416 429 432 468 486 512 528 572 576 594 601 624 648 702 704 768 792 832 858 864 891 936 972 1024 1053 1056 1144 1152 1188 1202 1248 1287 1296 1404 1408 1536 1584 1664 1716 1728 1782 1803 1872 1944 2106 2112 2288 2304 2376 2404 2496 2574 2592 2673 2808 2816 3072 3159 3168 3328 3432 3456 3564 3606 3744 3861 3888 4212 4224 4576 4608 4752 4808 4992 5148 5184 5346 5409 5616 5632 6318 6336 6611 6656 6864 6912 7128 7212 7488 7722 7776 7813 8424 8448 9152 9216 9504 9616 9984 10296 10368 10692 10818 11232 11264 11583 12636 12672 13222 13312 13728 13824 14256 14424 14976 15444 15552 15626 16227 16848 16896 18304 19008 19232 19833 19968 20592 20736 21384 21636 22464 23166 23439 25272 25344 26444 27456 27648 28512 28848 29952 30888 31104 31252 32454 33696 33792 34749 36608 38016 38464 39666 39936 41184 41472 42768 43272 44928 46332 46878 48681 50544 50688 52888 54912 57024 57696 59499 59904 61776 62208 62504 64908 67392 69498 70317 73216 76032 76928 79332 82368 82944 85536 85943 86544 89856 92664 93756 97362 101088 101376 105776 109824 114048 115392 118998 119808 123552 124416 125008 129816 134784 138996 140634 146043 146432 152064 153856 158664 164736 171072 171886 173088 178497 179712 185328 187512 194724 202176 210951 211552 219648 228096 230784 237996 247104 248832 250016 257829 259632 269568 277992 281268 292086 304128 307712 317328 329472 342144 343772 346176 356994 359424 370656 375024 389448 404352 421902 423104 439296 456192 461568 475992 494208 500032 515658 519264 535491 539136 555984 562536 584172 615424 632853 634656 658944 684288 687544 692352 713988 741312 750048 773487 778896 808704 843804 846208 912384 923136 951984 988416 1000064 1031316 1038528 1070982 1078272 1111968 1125072 1168344 1265706 1269312 1317888 1368576 1375088 1384704 1427976 1482624 1500096 1546974 1557792 1606473 1617408 1687608 1692416 1846272 1898559 1903968 1976832 2000128 2062632 2077056 2141964 2223936 2250144 2320461 2336688 2531412 2538624 2737152 2750176 2769408 2855952 2965248 3000192 3093948 3115584 3212946 3234816 3375216 3384832 3797118 3807936 3953664 4000256 4125264 4154112 4283928 4447872 4500288 4640922 4673376 5062824 5077248 5500352 5538816 5711904 5930496 6000384 6187896 6231168 6425892 6750432 6769664 6961383 7594236 7615872 8000512 8250528 8308224 8567856 8895744 9000576 9281844 9346752 10125648 10154496 11000704 11423808 11860992 12000768 12375792 12462336 12851784 13500864 13922766 15188472 15231744 16501056 16616448 17135712 17791488 18001152 18563688 18693504 20251296 20308992 20884149 22001408 22847616 24001536 24751584 24924672 25703568 27001728 27845532 30376944 30463488 33002112 34271424 35582976 36002304 37127376 37387008 40502592 41768298 44002816 45695232 49503168 49849344 51407136 54003456 55691064 60753888 60926976 66004224 68542848 72004608 74254752 74774016 81005184 83536596 88005632 91390464 99006336 102814272 108006912 111382128 121507776 132008448 137085696 148509504 149548032 162010368 167073192 182780928 198012672 205628544 216013824 222764256 243015552 264016896 274171392 297019008 324020736 334146384 396025344 411257088 445528512 486031104 548342784 594038016 648041472 668292768 792050688 822514176 891057024 972062208 1188076032 1336585536 1645028352 1782114048 1944124416 2376152064 2673171072 3564228096 5346342144 7128456192 10692684288 21385368576
• Sum of all divisors σ(n): 75357242688
• Sum of proper divisors (its aliquot sum) s(n): 53971874112
• 21385368576 is an abundant number, because the sum of its proper divisors (53971874112) is greater than itself. Its abundance is 32586505536

Bases of 21385368576

• Binary: 10011111010101010101101010000000000₂
• Hexadecimal: 0x4FAAAD400
• Base-36: 9TOAO00

Squares and roots of 21385368576

• 21385368576 squared (21385368576²) is 457333989131368267776
• 21385368576 cubed (21385368576³) is 9780255919906688489580423806976
• The square root of 21385368576 is 146237.3706546997
• The cube root of 21385368576 is 2775.6982178785

Scales and comparisons

• 21,385,368,576 seconds is equal to 679 years, 51 weeks, 2 days, 20 hours, 9 minutes, 36 seconds.
• To count from 1 to 21,385,368,576 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 21385368576 cubic inches would be around 231.3 feet tall.

Recreational maths with 21385368576

• 21385368576 backwards is 67586358312
• 21385368576 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21385368576's digits is 54
• More coming soon!