21100204520

Names of 21100204520

• Cardinal: 21100204520 can be written as Twenty-one billion, one hundred million, two hundred four thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.110020452 × 10¹⁰

Factors of 21100204520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 76933

Divisors of 21100204520

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 19 20 38 40 76 95 152 190 361 380 722 760 1444 1805 2888 3610 6859 7220 13718 14440 27436 34295 54872 68590 76907 137180 153814 274360 307628 384535 615256 769070 1461233 1538140 2922466 3076280 5844932 7306165 11689864 14612330 27763427 29224660 55526854 58449320 111053708 138817135 222107416 277634270 527505113 555268540 1055010226 1110537080 2110020452 2637525565 4220040904 5275051130 10550102260 21100204520
• Sum of all divisors σ(n): 50113252800
• Sum of proper divisors (its aliquot sum) s(n): 29013048280
• 21100204520 is an abundant number, because the sum of its proper divisors (29013048280) is greater than itself. Its abundance is 7912843760

Bases of 21100204520

• Binary: 10011101001101010111001000111101000₂
• Hexadecimal: 0x4E9AB91E8
• Base-36: 9OYIM08

Squares and roots of 21100204520

• 21100204520 squared (21100204520²) is 445218630785828430400
• 21100204520 cubed (21100204520³) is 9394204165695348199070585408000
• The square root of 21100204520 is 145259.0944485061
• The cube root of 21100204520 is 2763.3054163363

Scales and comparisons

• 21,100,204,520 seconds is equal to 670 years, 47 weeks, 6 days, 7 hours, 55 minutes, 20 seconds.
• To count from 1 to 21,100,204,520 would take you about one thousand, three hundred forty-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 21100204520 cubic inches would be around 230.3 feet tall.

Recreational maths with 21100204520

• 21100204520 backwards is 02540200112
• The number of decimal digits it has is: 11
• The sum of 21100204520's digits is 17
• More coming soon!