21385677456

Names of 21385677456

• Cardinal: 21385677456 can be written as Twenty-one billion, three hundred eighty-five million, six hundred seventy-seven thousand, four hundred fifty-six.

Scientific notation

• Scientific notation: 2.1385677456 × 10¹⁰

Factors of 21385677456

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2890

Divisors of 21385677456

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 27 33 36 39 44 48 52 54 66 72 78 88 99 104 108 117 121 132 143 144 156 176 198 208 216 234 242 264 286 297 312 351 363 396 429 432 468 484 528 572 594 624 702 726 792 858 936 968 1089 1144 1188 1287 1331 1404 1452 1573 1584 1716 1872 1936 2178 2288 2376 2574 2662 2808 2861 2904 3146 3267 3432 3861 3993 4356 4719 4752 5148 5324 5616 5722 5808 6292 6534 6864 7722 7986 8583 8712 9438 10296 10648 11444 11979 12584 13068 14157 15444 15972 17166 17303 17424 18876 20592 21296 22888 23958 25168 25749 26136 28314 30888 31471 31944 34332 34606 35937 37193 37752 42471 45776 47916 51498 51909 52272 56628 61776 62942 63888 68664 69212 71874 74386 75504 77247 84942 94413 95832 102996 103818 111579 113256 125884 137328 138424 143748 148772 154494 155727 169884 188826 191664 205992 207636 223158 226512 251768 276848 283239 287496 297544 308988 311454 334737 339768 346181 377652 409123 411984 415272 446316 467181 503536 566478 574992 595088 617976 622908 669474 679536 692362 755304 818246 830544 849717 892632 934362 1004211 1038543 1132956 1227369 1235952 1245816 1338948 1384724 1510608 1636492 1699434 1785264 1868724 2008422 2077086 2265912 2454738 2491632 2677896 2769448 3115629 3272984 3398868 3682107 3737448 3807991 4016844 4154172 4500353 4531824 4909476 5355792 5538896 6231258 6545968 6797736 7364214 7474896 7615982 8033688 8308344 9000706 9346887 9818952 11046321 11423973 12462516 13501059 13595472 14728428 15231964 16067376 16616688 18001412 18693774 19637904 22092642 22847946 24925032 27002118 29456856 30463928 34271919 36002824 37387548 40503177 44185284 45695892 49503883 49850064 54004236 58913712 60927856 68543838 72005648 74775096 81006354 88370568 91391784 99007766 102815757 108008472 121509531 137087676 148511649 149550192 162012708 176741136 182783568 198015532 205631514 216016944 243019062 274175352 297023298 324025416 396031064 411263028 445534947 486038124 548350704 594046596 648050832 792062128 822526056 891069894 972076248 1188093192 1336604841 1645052112 1782139788 1944152496 2376186384 2673209682 3564279576 5346419364 7128559152 10692838728 21385677456
• Sum of all divisors σ(n): 72737844480
• Sum of proper divisors (its aliquot sum) s(n): 51352167024
• 21385677456 is an abundant number, because the sum of its proper divisors (51352167024) is greater than itself. Its abundance is 29966489568

Bases of 21385677456

• Binary: 10011111010101011111000101010010000₂
• Hexadecimal: 0x4FAAF8A90
• Base-36: 9TOHAC0

Squares and roots of 21385677456

• 21385677456 squared (21385677456²) is 457347200252066631936
• 21385677456 cubed (21385677456³) is 9780679709995338888003564834816
• The square root of 21385677456 is 146238.4267420845
• The cube root of 21385677456 is 2775.7115814319

Scales and comparisons

• 21,385,677,456 seconds is equal to 679 years, 51 weeks, 6 days, 9 hours, 57 minutes, 36 seconds.
• To count from 1 to 21,385,677,456 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 21385677456 cubic inches would be around 231.3 feet tall.

Recreational maths with 21385677456

• 21385677456 backwards is 65477658312
• 21385677456 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21385677456's digits is 54
• More coming soon!