21159028980

Names of 21159028980

• Cardinal: 21159028980 can be written as Twenty-one billion, one hundred fifty-nine million, twenty-eight thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 2.115902898 × 10¹⁰

Factors of 21159028980

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 157456

Divisors of 21159028980

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 83 90 108 135 162 166 180 249 270 324 332 405 415 498 540 747 810 830 996 1245 1494 1620 1660 2241 2490 2988 3735 4482 4980 6723 7470 8964 11205 13446 14940 22410 26892 33615 44820 67230 134460 157363 314726 472089 629452 786815 944178 1416267 1573630 1888356 2360445 2832534 3147260 4248801 4720890 5665068 7081335 8497602 9441780 12746403 13061129 14162670 16995204 21244005 25492806 26122258 28325340 39183387 42488010 50985612 52244516 63732015 65305645 78366774 84976020 117550161 127464030 130611290 156733548 195916935 235100322 254928060 261222580 352650483 391833870 470200644 587750805 705300966 783667740 1057951449 1175501610 1410601932 1763252415 2115902898 2351003220 3526504830 4231805796 5289757245 7053009660 10579514490 21159028980
• Sum of all divisors σ(n): 67176803232
• Sum of proper divisors (its aliquot sum) s(n): 46017774252
• 21159028980 is an abundant number, because the sum of its proper divisors (46017774252) is greater than itself. Its abundance is 24858745272

Bases of 21159028980

• Binary: 10011101101001011010010100011110100₂
• Hexadecimal: 0x4ED2D28F4
• Base-36: 9PXJF90

Squares and roots of 21159028980

• 21159028980 squared (21159028980²) is 447704507376479840400
• 21159028980 cubed (21159028980³) is 9472992646055560713409374792000
• The square root of 21159028980 is 145461.4346828739
• The cube root of 21159028980 is 2765.8709384967

Scales and comparisons

• 21,159,028,980 seconds is equal to 672 years, 41 weeks, 1 day, 4 hours, 3 minutes.
• To count from 1 to 21,159,028,980 would take you about one thousand, three hundred forty-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 21159028980 cubic inches would be around 230.5 feet tall.

Recreational maths with 21159028980

• 21159028980 backwards is 08982095112
• 21159028980 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21159028980's digits is 45
• More coming soon!