21102791824

Names of 21102791824

• Cardinal: 21102791824 can be written as Twenty-one billion, one hundred two million, seven hundred ninety-one thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 2.1102791824 × 10¹⁰

Factors of 21102791824

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1604

Divisors of 21102791824

• Number of divisors d(n): 45
• Complete list of divisors:
  1 2 4 8 16 23 46 92 184 368 529 1058 1579 2116 3158 4232 6316 8464 12632 25264 36317 72634 145268 290536 581072 835291 1670582 2493241 3341164 4986482 6682328 9972964 13364656 19945928 39891856 57344543 114689086 229378172 458756344 917512688 1318924489 2637848978 5275697956 10551395912 21102791824
• Sum of all divisors σ(n): 42768716403
• Sum of proper divisors (its aliquot sum) s(n): 21665924579
• 21102791824 is an abundant number, because the sum of its proper divisors (21665924579) is greater than itself. Its abundance is 563132755

Bases of 21102791824

• Binary: 10011101001110100110000110010010000₂
• Hexadecimal: 0x4E9D30C90
• Base-36: 9P022DS

Squares and roots of 21102791824

• 21102791824 squared (21102791824²) is 445327822767081246976
• 21102791824 cubed (21102791824³) is 9397660337288883195028857524224
• 21102791824 is a perfect square number. Its square root is 145268
• The cube root of 21102791824 is 2763.4183570895

Scales and comparisons

• 21,102,791,824 seconds is equal to 671 years, 1 day, 6 hours, 37 minutes, 4 seconds.
• To count from 1 to 21,102,791,824 would take you about one thousand, three hundred forty-two 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 21102791824 cubic inches would be around 230.3 feet tall.

Recreational maths with 21102791824

• 21102791824 backwards is 42819720112
• The number of decimal digits it has is: 11
• The sum of 21102791824's digits is 37
• More coming soon!