21278134164

Names of 21278134164

• Cardinal: 21278134164 can be written as Twenty-one billion, two hundred seventy-eight million, one hundred thirty-four thousand, one hundred sixty-four.

Scientific notation

• Scientific notation: 2.1278134164 × 10¹⁰

Factors of 21278134164

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1123

Divisors of 21278134164

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 23 28 42 46 49 67 69 84 92 98 134 138 147 161 196 201 268 276 294 322 402 469 483 529 588 644 804 938 966 1021 1058 1127 1407 1541 1587 1876 1932 2042 2116 2254 2814 3063 3082 3174 3283 3381 3703 4084 4508 4623 5628 6126 6164 6348 6566 6762 7147 7406 9246 9849 10787 11109 12252 13132 13524 14294 14812 18492 19698 21441 21574 22218 23483 25921 28588 32361 35443 39396 42882 43148 44436 46966 50029 51842 64722 68407 70449 70886 75509 77763 85764 93932 100058 103684 106329 129444 136814 140898 141772 150087 151018 155526 164381 200116 205221 212658 226527 248101 273628 281796 300174 302036 311052 328762 410442 425316 453054 478849 493143 496202 540109 600348 657524 744303 820884 906108 957698 986286 992404 1080218 1150667 1436547 1488606 1573361 1620327 1736707 1915396 1972572 2160436 2301334 2873094 2977212 3146722 3240654 3351943 3452001 3473414 3780763 4602668 4720083 5210121 5746188 6293444 6481308 6703886 6904002 6946828 7561526 9440166 10055829 10420242 11013527 11342289 13407772 13808004 15123052 18880332 20111658 20840484 22027054 22684578 26465341 33040581 36187303 40223316 44054108 45369156 52930682 66081162 72374606 77094689 79396023 105861364 108561909 132162324 144749212 154189378 158792046 217123818 231284067 253311121 308378756 317584092 434247636 462568134 506622242 759933363 925136268 1013244484 1519866726 1773177847 3039733452 3546355694 5319533541 7092711388 10639067082 21278134164
• Sum of all divisors σ(n): 61336335648
• Sum of proper divisors (its aliquot sum) s(n): 40058201484
• 21278134164 is an abundant number, because the sum of its proper divisors (40058201484) is greater than itself. Its abundance is 18780067320

Bases of 21278134164

• Binary: 10011110100010001101000111110010100₂
• Hexadecimal: 0x4F4468F94
• Base-36: 9RWG9EC

Squares and roots of 21278134164

• 21278134164 squared (21278134164²) is 452758993501183978896
• 21278134164 cubed (21278134164³) is 9633866607675796795796432602944
• The square root of 21278134164 is 145870.2648383145
• The cube root of 21278134164 is 2771.0509709111

Scales and comparisons

• 21,278,134,164 seconds is equal to 676 years, 30 weeks, 16 hours, 49 minutes, 24 seconds.
• To count from 1 to 21,278,134,164 would take you about one thousand, three hundred fifty-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 21278134164 cubic inches would be around 230.9 feet tall.

Recreational maths with 21278134164

• 21278134164 backwards is 46143187212
• The number of decimal digits it has is: 11
• The sum of 21278134164's digits is 39
• More coming soon!