21187598940

Names of 21187598940

• Cardinal: 21187598940 can be written as Twenty-one billion, one hundred eighty-seven million, five hundred ninety-eight thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.118759894 × 10¹⁰

Factors of 21187598940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2195

Divisors of 21187598940

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 29 30 36 45 58 60 67 87 90 116 134 145 174 180 201 261 268 290 335 348 402 435 522 580 603 670 804 841 870 1005 1044 1206 1305 1340 1682 1740 1943 2010 2089 2412 2523 2610 3015 3364 3886 4020 4178 4205 5046 5220 5829 6030 6267 7569 7772 8356 8410 9715 10092 10445 11658 12060 12534 12615 15138 16820 17487 18801 19430 20890 23316 25068 25230 29145 30276 31335 34974 37602 37845 38860 41780 50460 56347 58290 60581 62670 69948 75204 75690 87435 94005 112694 116580 121162 125340 139963 151380 169041 174870 181743 188010 225388 242324 279926 281735 302905 338082 349740 363486 376020 419889 507123 545229 559852 563470 605810 676164 699815 726972 839778 845205 908715 1014246 1090458 1126940 1211620 1259667 1399630 1679556 1690410 1756849 1817430 2028492 2099445 2180916 2519334 2535615 2726145 2799260 3380820 3513698 3634860 4058927 4198890 5038668 5071230 5270547 5452290 6298335 7027396 8117854 8397780 8784245 10142460 10541094 10904580 12176781 12596670 15811641 16235708 17568490 20294635 21082188 24353562 25193340 26352735 31623282 35136980 36530343 40589270 48707124 52705470 60883905 63246564 73060686 79058205 81178540 105410940 117708883 121767810 146121372 158116410 182651715 235417766 243535620 316232820 353126649 365303430 470835532 588544415 706253298 730606860 1059379947 1177088830 1412506596 1765633245 2118759894 2354177660 3531266490 4237519788 5296899735 7062532980 10593799470 21187598940
• Sum of all divisors σ(n): 67587439920
• Sum of proper divisors (its aliquot sum) s(n): 46399840980
• 21187598940 is an abundant number, because the sum of its proper divisors (46399840980) is greater than itself. Its abundance is 25212242040

Bases of 21187598940

• Binary: 10011101110111000010001101001011100₂
• Hexadecimal: 0x4EEE11A5C
• Base-36: 9QEJRZ0

Squares and roots of 21187598940

• 21187598940 squared (21187598940²) is 448914348842289123600
• 21187598940 cubed (21187598940³) is 9511417181681675262360888984000
• The square root of 21187598940 is 145559.6061412643
• The cube root of 21187598940 is 2767.1152502097

Scales and comparisons

• 21,187,598,940 seconds is equal to 673 years, 36 weeks, 2 days, 20 hours, 9 minutes.
• To count from 1 to 21,187,598,940 would take you about one thousand, three hundred forty-seven 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 21187598940 cubic inches would be around 230.6 feet tall.

Recreational maths with 21187598940

• 21187598940 backwards is 04989578112
• The number of decimal digits it has is: 11
• The sum of 21187598940's digits is 54
• More coming soon!