168121449628

Names of 168121449628

• Cardinal: 168121449628 can be written as One hundred sixty-eight billion, one hundred twenty-one million, four hundred forty-nine thousand, six hundred twenty-eight.

Scientific notation

• Scientific notation: 1.68121449628 × 10¹¹

Factors of 168121449628

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 21846

Divisors of 168121449628

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 11 22 44 89 121 178 181 242 356 362 484 724 979 1958 1991 3916 3982 7964 10769 16109 21538 21563 21901 32218 43076 43126 43802 64436 86252 87604 177199 237193 354398 474386 708796 948772 1919107 1949189 2609123 3838214 3898378 3902903 5218246 7676428 7796756 7805806 10436492 15611612 21110177 42220354 42931933 84440708 85863866 171727732 232211947 347358367 464423894 472251263 694716734 928847788 944502526 1389433468 1889005052 3820942037 7641884074 15283768148 42030362407 84060724814 168121449628
• Sum of all divisors σ(n): 328846255920
• Sum of proper divisors (its aliquot sum) s(n): 160724806292
• 168121449628 is a deficient number, because the sum of its proper divisors (160724806292) is less than itself. Its deficiency is 7396643336

Bases of 168121449628

• Binary: 10011100100100110100011011110010011100₂
• Hexadecimal: 0x2724D1BC9C
• Base-36: 258F64RG

Squares and roots of 168121449628

• 168121449628 squared (168121449628²) is 28264821825020141338384
• 168121449628 cubed (168121449628³) is 4751922818699518722106566158921152
• The square root of 168121449628 is 410026.1572485347
• The cube root of 168121449628 is 5519.1776765913

Scales and comparisons

• 168,121,449,628 seconds is equal to 5,345 years, 38 weeks, 4 days, 2 hours, 40 minutes, 28 seconds.
• To count from 1 to 168,121,449,628 would take you about ten thousand, six hundred ninety-one 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 168121449628 cubic inches would be around 459.9 feet tall.

Recreational maths with 168121449628

• 168121449628 backwards is 826944121861
• The number of decimal digits it has is: 12
• The sum of 168121449628's digits is 52
• More coming soon!