21091148571720

Names of 21091148571720

• Cardinal: 21091148571720 can be written as Twenty-one trillion, ninety-one billion, one hundred forty-eight million, five hundred seventy-one thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.109114857172 × 10¹³

Factors of 21091148571720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 20400

Divisors of 21091148571720

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 23 24 30 40 46 60 69 92 115 120 138 184 230 257 276 345 460 514 552 690 771 920 1028 1285 1380 1542 1607 2056 2570 2760 3084 3214 3855 4821 5140 5911 6168 6428 7710 8035 9642 10280 11822 12856 15420 16070 17733 18503 19284 23644 24105 29555 30840 32140 35466 36961 37006 38568 47288 48210 55509 59110 64280 70932 73922 74012 88665 92515 96420 110883 111018 118220 141864 147844 148024 177330 184805 185030 192840 221766 222036 236440 277545 295688 354660 369610 370060 412999 425569 443532 444072 554415 555090 709320 739220 740120 825998 851138 887064 1108830 1110180 1238997 1276707 1478440 1651996 1702276 2064995 2127845 2217660 2220360 2477994 2553414 3303992 3404552 4129990 4255690 4435320 4755271 4955988 5106828 6194985 6383535 8259980 8511380 9498977 9510542 9911976 10213656 12389970 12767070 14265813 16519960 17022760 18997954 19021084 23776355 24779940 25534140 28496931 28531626 29734321 37995908 38042168 47494885 47552710 49559880 51068280 56993862 57063252 59468642 71329065 75991816 89202963 94989770 95105420 109371233 113987724 114126504 118937284 142484655 142658130 148671605 178405926 189979540 190210840 218742466 227975448 237874568 284969310 285316260 297343210 328113699 356811852 379959080 437484932 446014815 546856165 569938620 570632520 594686420 656227398 683889383 713623704 874969864 892029630 1093712330 1139877240 1189372840 1312454796 1367778766 1640568495 1784059260 2051668149 2187424660 2624909592 2735557532 3281136990 3419446915 3568118520 4103336298 4374849320 5471115064 6562273980 6838893830 7641720497 8206672596 10258340745 13124547960 13677787660 15283440994 16413345192 20516681490 22925161491 27355575320 30566881988 38208602485 41033362980 45850322982 61133763976 76417204970 82066725960 91700645964 114625807455 152834409940 175759571431 183401291928 229251614910 305668819880 351519142862 458503229820 527278714293 703038285724 878797857155 917006459640 1054557428586 1406076571448 1757595714310 2109114857172 2636393571465 3515191428620 4218229714344 5272787142930 7030382857240 10545574285860 21091148571720
• Sum of all divisors σ(n): 66326199459840
• Sum of proper divisors (its aliquot sum) s(n): 45235050888120
• 21091148571720 is an abundant number, because the sum of its proper divisors (45235050888120) is greater than itself. Its abundance is 24143902316400

Bases of 21091148571720

• Binary: 100110010111010101010011010110010010001001000₂
• Hexadecimal: 0x132EAA6B2448
• Base-36: 7H551AVRC

Squares and roots of 21091148571720

• 21091148571720 squared (21091148571720²) is 444836548074366595983758400
• 21091148571720 cubed (21091148571720³) is 9382113725567532147226524266477552448000
• The square root of 21091148571720 is 4592510.0513466489
• The cube root of 21091148571720 is 27629.1003419979

Scales and comparisons

• 21,091,148,571,720 seconds is equal to 670,633 years, 14 weeks, 5 days, 21 hours, 2 minutes.
• To count from 1 to 21,091,148,571,720 would take you about one million, six hundred seventy-six thousand, five hundred eighty-three 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 21091148571720 cubic inches would be around 2302.4 feet tall.

Recreational maths with 21091148571720

• 21091148571720 backwards is 02717584119012
• The number of decimal digits it has is: 14
• The sum of 21091148571720's digits is 48
• More coming soon!