121908361728

Names of 121908361728

• Cardinal: 121908361728 can be written as One hundred twenty-one billion, nine hundred eight million, three hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.21908361728 × 10¹¹

Factors of 121908361728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 79367428

Divisors of 121908361728

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 512 768 1536 79367423 158734846 238102269 317469692 476204538 634939384 952409076 1269878768 1904818152 2539757536 3809636304 5079515072 7619272608 10159030144 15238545216 20318060288 30477090432 40636120576 60954180864 121908361728
• Sum of all divisors σ(n): 324771499008
• Sum of proper divisors (its aliquot sum) s(n): 202863137280
• 121908361728 is an abundant number, because the sum of its proper divisors (202863137280) is greater than itself. Its abundance is 80954775552

Bases of 121908361728

• Binary: 1110001100010010011011111101000000000₂
• Hexadecimal: 0x1C624DFA00
• Base-36: 1K0539XC

Squares and roots of 121908361728

• 121908361728 squared (121908361728²) is 14861648659204895145984
• 121908361728 cubed (121908361728³) is 1811759240620796554324928838500352
• The square root of 121908361728 is 349153.7794840549
• The cube root of 121908361728 is 4958.4335601517

Scales and comparisons

• 121,908,361,728 seconds is equal to 3,876 years, 16 weeks, 9 hours, 48 minutes, 48 seconds.
• To count from 1 to 121,908,361,728 would take you about seven thousand, seven hundred fifty-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 121908361728 cubic inches would be around 413.2 feet tall.

Recreational maths with 121908361728

• 121908361728 backwards is 827163809121
• 121908361728 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 121908361728's digits is 48
• More coming soon!