688168130

Names of 688168130

• Cardinal: 688168130 can be written as Six hundred eighty-eight million, one hundred sixty-eight thousand, one hundred thirty.

Scientific notation

• Scientific notation: 6.8816813 × 10⁸

Factors of 688168130

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 771

Divisors of 688168130

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 10 13 26 43 65 86 130 215 307 401 430 559 614 802 1118 1535 2005 2795 3070 3991 4010 5213 5590 7982 10426 13201 17243 19955 26065 26402 34486 39910 52130 66005 86215 123107 132010 171613 172430 224159 246214 343226 448318 615535 858065 1120795 1231070 1600391 1716130 2241590 3200782 5293601 8001955 10587202 16003910 26468005 52936010 68816813 137633626 344084065 688168130
• Sum of all divisors σ(n): 1372871808
• Sum of proper divisors (its aliquot sum) s(n): 684703678
• 688168130 is a deficient number, because the sum of its proper divisors (684703678) is less than itself. Its deficiency is 3464452

Bases of 688168130

• Binary: 101001000001001001110011000010₂
• Hexadecimal: 0x29049CC2
• Base-36: BDPTXE

Squares and roots of 688168130

• 688168130 squared (688168130²) is 473575375147696900
• 688168130 cubed (688168130³) is 325899480329439049479797000
• The square root of 688168130 is 26232.9588495083
• The cube root of 688168130 is 882.8728981289

Scales and comparisons

• 688,168,130 seconds is equal to 21 years, 45 weeks, 5 days, 21 hours, 48 minutes, 50 seconds.
• To count from 1 to 688,168,130 would take you about thirty-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 688168130 cubic inches would be around 73.6 feet tall.

Recreational maths with 688168130

• 688168130 backwards is 031861886
• The number of decimal digits it has is: 9
• The sum of 688168130's digits is 41
• More coming soon!