21335187328

Names of 21335187328

• Cardinal: 21335187328 can be written as Twenty-one billion, three hundred thirty-five million, one hundred eighty-seven thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1335187328 × 10¹⁰

Factors of 21335187328

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 140919

Divisors of 21335187328

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 52 56 64 91 104 112 128 169 182 208 224 338 364 416 448 676 728 832 896 1183 1352 1456 1664 2366 2704 2912 4732 5408 5824 9464 10816 11648 18928 21632 37856 75712 140897 151424 281794 563588 986279 1127176 1831661 1972558 2254352 3663322 3945116 4508704 7326644 7890232 9017408 12821627 14653288 15780464 18034816 23811593 25643254 29306576 31560928 47623186 51286508 58613152 63121856 95246372 102573016 117226304 126243712 166681151 190492744 205146032 234452608 333362302 380985488 410292064 666724604 761970976 820584128 1333449208 1523941952 1641168256 2666898416 3047883904 5333796832 10667593664 21335187328
• Sum of all divisors σ(n): 52600041360
• Sum of proper divisors (its aliquot sum) s(n): 31264854032
• 21335187328 is an abundant number, because the sum of its proper divisors (31264854032) is greater than itself. Its abundance is 9929666704

Bases of 21335187328

• Binary: 10011110111101011010001111110000000₂
• Hexadecimal: 0x4F7AD1F80
• Base-36: 9SUF3WG

Squares and roots of 21335187328

• 21335187328 squared (21335187328²) is 455190218320851779584
• 21335187328 cubed (21335187328³) is 9711568577748590325946805911552
• The square root of 21335187328 is 146065.6952470361
• The cube root of 21335187328 is 2773.5254380819

Scales and comparisons

• 21,335,187,328 seconds is equal to 678 years, 20 weeks, 3 days, 55 minutes, 28 seconds.
• To count from 1 to 21,335,187,328 would take you about one thousand, three hundred fifty-six 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 21335187328 cubic inches would be around 231.1 feet tall.

Recreational maths with 21335187328

• 21335187328 backwards is 82378153312
• The number of decimal digits it has is: 11
• The sum of 21335187328's digits is 43
• More coming soon!