21378861036

Names of 21378861036

• Cardinal: 21378861036 can be written as Twenty-one billion, three hundred seventy-eight million, eight hundred sixty-one thousand and thirty-six.

Scientific notation

• Scientific notation: 2.1378861036 × 10¹⁰

Factors of 21378861036

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 522

Divisors of 21378861036

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 81 108 117 156 162 223 234 243 281 324 351 446 468 486 562 669 702 729 843 892 972 1053 1124 1338 1404 1458 1686 2007 2106 2187 2529 2676 2899 2916 3159 3372 3653 4014 4212 4374 5058 5798 6021 6318 6561 7306 7587 8028 8697 8748 9477 10116 10959 11596 12042 12636 13122 14612 15174 17394 18063 18954 21918 22761 24084 26091 26244 28431 30348 32877 34788 36126 37908 43836 45522 52182 54189 56862 62663 65754 68283 72252 78273 85293 91044 98631 104364 108378 113724 125326 131508 136566 156546 162567 170586 187989 197262 204849 216756 234819 250652 273132 295893 313092 325134 341172 375978 394524 409698 469638 487701 563967 591786 614547 650268 704457 751956 814619 819396 887679 939276 975402 1127934 1183572 1229094 1408914 1463103 1629238 1691901 1775358 1843641 1950804 2113371 2255868 2443857 2458188 2663037 2817828 2926206 3258476 3383802 3550716 3687282 4226742 4887714 5075703 5326074 5852412 6340113 6767604 7331571 7374564 7989111 8453484 9775428 10151406 10652148 12680226 14663142 15227109 15978222 19020339 20302812 21994713 23967333 25360452 29326284 30454218 31956444 38040678 43989426 45681327 47934666 60908436 65984139 76081356 87978852 91362654 95869332 131968278 137043981 182725308 197952417 263936556 274087962 395904834 411131943 548175924 593857251 791809668 822263886 1187714502 1644527772 1781571753 2375429004 3563143506 5344715259 7126287012 10689430518 21378861036
• Sum of all divisors σ(n): 60920356224
• Sum of proper divisors (its aliquot sum) s(n): 39541495188
• 21378861036 is an abundant number, because the sum of its proper divisors (39541495188) is greater than itself. Its abundance is 18162634152

Bases of 21378861036

• Binary: 10011111010010001111000011111101100₂
• Hexadecimal: 0x4FA4787EC
• Base-36: 9TKF6R0

Squares and roots of 21378861036

• 21378861036 squared (21378861036²) is 457055699196598993296
• 21378861036 cubed (21378861036³) is 9771330278835906721492679614656
• The square root of 21378861036 is 146215.1190404057
• The cube root of 21378861036 is 2775.4166421897

Scales and comparisons

• 21,378,861,036 seconds is equal to 679 years, 40 weeks, 4 days, 12 hours, 30 minutes, 36 seconds.
• To count from 1 to 21,378,861,036 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 21378861036 cubic inches would be around 231.3 feet tall.

Recreational maths with 21378861036

• 21378861036 backwards is 63016887312
• The number of decimal digits it has is: 11
• The sum of 21378861036's digits is 45
• More coming soon!