21090016240

Names of 21090016240

• Cardinal: 21090016240 can be written as Twenty-one billion, ninety million, sixteen thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.109001624 × 10¹⁰

Factors of 21090016240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 629

Divisors of 21090016240

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 41 80 82 127 164 197 205 254 257 328 394 410 508 514 635 656 788 820 985 1016 1028 1270 1285 1576 1640 1970 2032 2056 2540 2570 3152 3280 3940 4112 5080 5140 5207 7880 8077 10160 10280 10414 10537 15760 16154 20560 20828 21074 25019 26035 32308 32639 40385 41656 42148 50038 50629 52070 52685 64616 65278 80770 83312 84296 100076 101258 104140 105370 125095 129232 130556 161540 163195 168592 200152 202516 208280 210740 250190 253145 261112 323080 326390 400304 405032 416560 421480 500380 506290 522224 646160 652780 810064 842960 1000760 1012580 1025779 1305560 1338199 2001520 2025160 2051558 2075789 2611120 2676398 4050320 4103116 4151578 5128895 5352796 6429883 6690995 8206232 8303156 10257790 10378945 10705592 12859766 13381990 16412464 16606312 20515580 20757890 21411184 25719532 26763980 32149415 33212624 41031160 41515780 51439064 53527960 64298830 82062320 83031560 102878128 107055920 128597660 166063120 257195320 263625203 514390640 527250406 1054500812 1318126015 2109001624 2636252030 4218003248 5272504060 10545008120 21090016240
• Sum of all divisors σ(n): 51080730624
• Sum of proper divisors (its aliquot sum) s(n): 29990714384
• 21090016240 is an abundant number, because the sum of its proper divisors (29990714384) is greater than itself. Its abundance is 8900698144

Bases of 21090016240

• Binary: 10011101001000100000001101111110000₂
• Hexadecimal: 0x4E9101BF0
• Base-36: 9OSG8OG

Squares and roots of 21090016240

• 21090016240 squared (21090016240²) is 444788785003463737600
• 21090016240 cubed (21090016240³) is 9380602699092918682235098624000
• The square root of 21090016240 is 145224.0208780903
• The cube root of 21090016240 is 2762.8605887077

Scales and comparisons

• 21,090,016,240 seconds is equal to 670 years, 31 weeks, 9 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,090,016,240 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 21090016240 cubic inches would be around 230.2 feet tall.

Recreational maths with 21090016240

• 21090016240 backwards is 04261009012
• The number of decimal digits it has is: 11
• The sum of 21090016240's digits is 25
• More coming soon!