21345368928

Names of 21345368928

• Cardinal: 21345368928 can be written as Twenty-one billion, three hundred forty-five million, three hundred sixty-eight thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1345368928 × 10¹⁰

Factors of 21345368928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 551780

Divisors of 21345368928

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 31 32 39 48 52 62 78 93 96 104 124 156 186 208 248 312 372 403 416 496 624 744 806 992 1209 1248 1488 1612 2418 2976 3224 4836 6448 9672 12896 19344 38688 551731 1103462 1655193 2206924 3310386 4413848 6620772 7172503 8827696 13241544 14345006 17103661 17655392 21517509 26483088 28690012 34207322 43035018 51310983 52966176 57380024 68414644 86070036 102621966 114760048 136829288 172140072 205243932 222347593 229520096 273658576 344280144 410487864 444695186 547317152 667042779 688560288 820975728 889390372 1334085558 1641951456 1778780744 2668171116 3557561488 5336342232 7115122976 10672684464 21345368928
• Sum of all divisors σ(n): 62288335872
• Sum of proper divisors (its aliquot sum) s(n): 40942966944
• 21345368928 is an abundant number, because the sum of its proper divisors (40942966944) is greater than itself. Its abundance is 19597598016

Bases of 21345368928

• Binary: 10011111000010010000111101101100000₂
• Hexadecimal: 0x4F8487B60
• Base-36: 9T0HC2O

Squares and roots of 21345368928

• 21345368928 squared (21345368928²) is 455624774672427869184
• 21345368928 cubed (21345368928³) is 9725478908119843217201402314752
• The square root of 21345368928 is 146100.5439004249
• The cube root of 21345368928 is 2773.9665628035

Scales and comparisons

• 21,345,368,928 seconds is equal to 678 years, 37 weeks, 1 day, 21 hours, 8 minutes, 48 seconds.
• To count from 1 to 21,345,368,928 would take you about one thousand, three hundred fifty-seven 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 21345368928 cubic inches would be around 231.2 feet tall.

Recreational maths with 21345368928

• 21345368928 backwards is 82986354312
• The number of decimal digits it has is: 11
• The sum of 21345368928's digits is 51
• More coming soon!