121955518728

Names of 121955518728

• Cardinal: 121955518728 can be written as One hundred twenty-one billion, nine hundred fifty-five million, five hundred eighteen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.21955518728 × 10¹¹

Factors of 121955518728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 9905443

Divisors of 121955518728

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 81 108 114 152 162 171 216 228 324 342 456 513 648 684 1026 1368 1539 2052 3078 4104 6156 12312 9905419 19810838 29716257 39621676 59432514 79243352 89148771 118865028 178297542 188202961 237730056 267446313 356595084 376405922 534892626 564608883 713190168 752811844 802338939 1069785252 1129217766 1505623688 1604677878 1693826649 2139570504 2258435532 3209355756 3387653298 4516871064 5081479947 6418711512 6775306596 10162959894 13550613192 15244439841 20325919788 30488879682 40651839576 60977759364 121955518728
• Sum of all divisors σ(n): 359566746000
• Sum of proper divisors (its aliquot sum) s(n): 237611227272
• 121955518728 is an abundant number, because the sum of its proper divisors (237611227272) is greater than itself. Its abundance is 115655708544

Bases of 121955518728

• Binary: 1110001100101000111011000100100001000₂
• Hexadecimal: 0x1C651D8908
• Base-36: 1K0X60I0

Squares and roots of 121955518728

• 121955518728 squared (121955518728²) is 14873148548215558737984
• 121955518728 cubed (121955518728³) is 1813862546316228584651191756964352
• The square root of 121955518728 is 349221.3033707995
• The cube root of 121955518728 is 4959.0728236797

Scales and comparisons

• 121,955,518,728 seconds is equal to 3,877 years, 42 weeks, 4 hours, 58 minutes, 48 seconds.
• To count from 1 to 121,955,518,728 would take you about seven thousand, seven hundred fifty-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 121955518728 cubic inches would be around 413.3 feet tall.

Recreational maths with 121955518728

• 121955518728 backwards is 827815559121
• 121955518728 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 121955518728's digits is 54
• More coming soon!