420908362691911978

Names of 420908362691911978

• Cardinal: 420908362691911978 can be written as Four hundred twenty quadrillion, nine hundred eight trillion, three hundred sixty-two billion, six hundred ninety-one million, nine hundred eleven thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 4.20908362691911978 × 10¹⁷

Factors of 420908362691911978

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 13286467750

Divisors of 420908362691911978

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 13 26 73 146 949 1898 16691 33382 216983 433966 1218443 2436886 15839759 31679518 13286450971 26572901942 172723862623 345447725246 969910920883 1939821841766 12608841971479 25217683942958 221764153156961 443528306313922 2882933991040493 5765867982080986 16188783180458153 32377566360916306 210454181345955989 420908362691911978
• Sum of all divisors σ(n): 689284282353331392
• Sum of proper divisors (its aliquot sum) s(n): 268375919661419414
• 420908362691911978 is a deficient number, because the sum of its proper divisors (268375919661419414) is less than itself. Its deficiency is 152532443030492564

Bases of 420908362691911978

• Binary: 10111010111010111011110110100000001001111100010000100101010₂
• Hexadecimal: 0x5D75DED013E212A
• Base-36: 374FK8F2VZ1M

Squares and roots of 420908362691911978

• 420908362691911978 squared (420908362691911978²) is 177163849783986119095062257299872484
• 420908362691911978 cubed (420908362691911978³) is 74569745940773440953172285395719966530810917552213352
• The square root of 420908362691911978 is 648774508.3554932481
• The cube root of 420908362691911978 is 749426.7398335165

Scales and comparisons

• 420,908,362,691,911,978 seconds is equal to 13,383,583,978 years, 28 weeks, 5 days, 10 hours, 12 minutes, 58 seconds.
• To count from 1 to 420,908,362,691,911,978 would take you about forty billion, one hundred fifty million, seven hundred fifty-one thousand, nine hundred thirty-five 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 420908362691911978 cubic inches would be around 62452.2 feet tall.

Recreational maths with 420908362691911978

• 420908362691911978 backwards is 879119196263809024
• The number of decimal digits it has is: 18
• The sum of 420908362691911978's digits is 85
• More coming soon!