21100238720

Names of 21100238720

• Cardinal: 21100238720 can be written as Twenty-one billion, one hundred million, two hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.110023872 × 10¹⁰

Factors of 21100238720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 157784

Divisors of 21100238720

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 11 16 19 20 22 32 38 40 44 55 64 76 80 88 95 110 128 152 160 176 190 209 220 304 320 352 380 418 440 608 640 704 760 836 880 1045 1216 1408 1520 1672 1760 2090 2432 3040 3344 3520 4180 6080 6688 7040 8360 12160 13376 16720 26752 33440 66880 133760 157747 315494 630988 788735 1261976 1577470 1735217 2523952 2997193 3154940 3470434 5047904 5994386 6309880 6940868 8676085 10095808 11988772 12619760 13881736 14985965 17352170 20191616 23977544 25239520 27763472 29971930 32969123 34704340 47955088 50479040 55526944 59943860 65938246 69408680 95910176 100958080 111053888 119887720 131876492 138817360 164845615 191820352 222107776 239775440 263752984 277634720 329691230 383640704 479550880 527505968 555269440 659382460 959101760 1055011936 1110538880 1318764920 1918203520 2110023872 2637529840 4220047744 5275059680 10550119360 21100238720
• Sum of all divisors σ(n): 57925065600
• Sum of proper divisors (its aliquot sum) s(n): 36824826880
• 21100238720 is an abundant number, because the sum of its proper divisors (36824826880) is greater than itself. Its abundance is 15724588160

Bases of 21100238720

• Binary: 10011101001101011000001011110000000₂
• Hexadecimal: 0x4E9AC1780
• Base-36: 9OYJCE8

Squares and roots of 21100238720

• 21100238720 squared (21100238720²) is 445220074040987238400
• 21100238720 cubed (21100238720³) is 9394249845200905794713550848000
• The square root of 21100238720 is 145259.2121691425
• The cube root of 21100238720 is 2763.3069092917

Scales and comparisons

• 21,100,238,720 seconds is equal to 670 years, 47 weeks, 6 days, 17 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,100,238,720 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 21100238720 cubic inches would be around 230.3 feet tall.

Recreational maths with 21100238720

• 21100238720 backwards is 02783200112
• The number of decimal digits it has is: 11
• The sum of 21100238720's digits is 26
• More coming soon!