168728221380

Names of 168728221380

• Cardinal: 168728221380 can be written as One hundred sixty-eight billion, seven hundred twenty-eight million, two hundred twenty-one thousand, three hundred eighty.

Scientific notation

• Scientific notation: 1.6872822138 × 10¹¹

Factors of 168728221380

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4715

Divisors of 168728221380

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 881 1231 1762 2462 2593 2643 3524 3693 4405 4924 5186 5286 6155 7386 7779 8810 10372 10572 12310 12965 13215 14772 15558 17620 18465 24620 25930 26430 31116 36930 38895 51860 52860 73860 77790 155580 1084511 2169022 2284433 3191983 3253533 4338044 4568866 5422555 6383966 6507066 6853299 9137732 9575949 10845110 11422165 12767932 13014132 13706598 15959915 16267665 19151898 21690220 22844330 27413196 31919830 32535330 34266495 38303796 45688660 47879745 63839660 65070660 68532990 95759490 137065980 191518980 2812137023 5624274046 8436411069 11248548092 14060685115 16872822138 28121370230 33745644276 42182055345 56242740460 84364110690 168728221380
• Sum of all divisors σ(n): 473542046208
• Sum of proper divisors (its aliquot sum) s(n): 304813824828
• 168728221380 is an abundant number, because the sum of its proper divisors (304813824828) is greater than itself. Its abundance is 136085603448

Bases of 168728221380

• Binary: 10011101001000111111000101011011000100₂
• Hexadecimal: 0x2748FC56C4
• Base-36: 25IGFCUC

Squares and roots of 168728221380

• 168728221380 squared (168728221380²) is 28469212690058289104400
• 168728221380 cubed (168728221380³) is 4803559621282460329111245132072000
• The square root of 168728221380 is 410765.4091814451
• The cube root of 168728221380 is 5525.8095099639

Scales and comparisons

• 168,728,221,380 seconds is equal to 5,365 years, 1 week, 5 days, 22 hours, 23 minutes.
• To count from 1 to 168,728,221,380 would take you about ten thousand, seven hundred thirty 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 168728221380 cubic inches would be around 460.5 feet tall.

Recreational maths with 168728221380

• 168728221380 backwards is 083122827861
• The number of decimal digits it has is: 12
• The sum of 168728221380's digits is 48
• More coming soon!