21398505590

Names of 21398505590

• Cardinal: 21398505590 can be written as Twenty-one billion, three hundred ninety-eight million, five hundred five thousand, five hundred ninety.

Scientific notation

• Scientific notation: 2.139850559 × 10¹⁰

Factors of 21398505590

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1875

Divisors of 21398505590

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 5 7 10 11 14 22 35 55 70 77 110 127 154 254 385 635 770 889 1270 1397 1723 1778 2794 3446 4445 6985 8615 8890 9779 12061 13970 16129 17230 18953 19558 24122 32258 37906 48895 60305 80645 94765 97790 112903 120610 132671 161290 177419 189530 218821 225806 265342 354838 437642 564515 663355 887095 1094105 1129030 1241933 1326710 1531747 1774190 2188210 2407031 2483866 3063494 4814062 6209665 7658735 12035155 12419330 15317470 16849217 24070310 27790267 33698434 55580534 84246085 138951335 168492170 194531869 277902670 305692937 389063738 611385874 972659345 1528464685 1945318690 2139850559 3056929370 4279701118 10699252795 21398505590
• Sum of all divisors σ(n): 48430773504
• Sum of proper divisors (its aliquot sum) s(n): 27032267914
• 21398505590 is an abundant number, because the sum of its proper divisors (27032267914) is greater than itself. Its abundance is 5633762324

Bases of 21398505590

• Binary: 10011111011011100110100100001110110₂
• Hexadecimal: 0x4FB734876
• Base-36: 9TW48L2

Squares and roots of 21398505590

• 21398505590 squared (21398505590²) is 457896041485261248100
• 21398505590 cubed (21398505590³) is 9798291003361234720078226879000
• The square root of 21398505590 is 146282.2805058769
• The cube root of 21398505590 is 2776.2664712319

Scales and comparisons

• 21,398,505,590 seconds is equal to 680 years, 21 weeks, 21 hours, 19 minutes, 50 seconds.
• To count from 1 to 21,398,505,590 would take you about one thousand, three hundred sixty 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 21398505590 cubic inches would be around 231.4 feet tall.

Recreational maths with 21398505590

• 21398505590 backwards is 09550589312
• The number of decimal digits it has is: 11
• The sum of 21398505590's digits is 47
• More coming soon!