21109807800

Names of 21109807800

• Cardinal: 21109807800 can be written as Twenty-one billion, one hundred nine million, eight hundred seven thousand, eight hundred.

Scientific notation

• Scientific notation: 2.11098078 × 10¹⁰

Factors of 21109807800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1723

Divisors of 21109807800

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 25 30 34 36 40 45 50 51 60 68 72 75 85 90 100 102 120 136 150 153 170 180 200 204 225 255 300 306 340 360 408 425 450 510 600 612 677 680 765 850 900 1019 1020 1224 1275 1354 1530 1700 1800 2031 2038 2040 2550 2708 3057 3060 3385 3400 3825 4062 4076 5095 5100 5416 6093 6114 6120 6770 7650 8124 8152 9171 10155 10190 10200 11509 12186 12228 13540 15285 15300 16248 16925 17323 18342 20310 20380 23018 24372 24456 25475 27080 30465 30570 30600 33850 34527 34646 36684 40620 40760 45855 46036 48744 50775 50950 51969 57545 60930 61140 67700 69054 69292 73368 76425 81240 86615 91710 92072 101550 101900 103581 103938 115090 121860 122280 135400 138108 138584 152325 152850 155907 172635 173230 183420 203100 203800 207162 207876 229275 230180 243720 259845 276216 287725 304650 305700 311814 345270 346460 366840 406200 414324 415752 433075 458550 460360 517905 519690 575450 609300 611400 623628 689863 690540 692920 779535 828648 863175 866150 917100 1035810 1039380 1150900 1218600 1247256 1299225 1379726 1381080 1559070 1726350 1732300 1834200 2069589 2071620 2078760 2301800 2589525 2598450 2759452 3118140 3449315 3452700 3464600 3897675 4139178 4143240 5179050 5196900 5518904 6208767 6236280 6898630 6905400 7795350 8278356 10347945 10358100 10393800 11727671 12417534 13797260 15590700 16556712 17246575 20695890 20716200 23455342 24835068 27594520 31043835 31181400 34493150 35183013 41391780 46910684 49670136 51739725 58638355 62087670 68986300 70366026 82783560 93821368 103479450 105549039 117276710 124175340 137972600 140732052 155219175 175915065 206958900 211098078 234553420 248350680 281464104 293191775 310438350 351830130 413917800 422196156 469106840 527745195 586383550 620876700 703660260 844392312 879575325 1055490390 1172767100 1241753400 1407320520 1759150650 2110980780 2345534200 2638725975 3518301300 4221961560 5277451950 7036602600 10554903900 21109807800
• Sum of all divisors σ(n): 75248643600
• Sum of proper divisors (its aliquot sum) s(n): 54138835800
• 21109807800 is an abundant number, because the sum of its proper divisors (54138835800) is greater than itself. Its abundance is 33029028000

Bases of 21109807800

• Binary: 10011101010001111100001101010111000₂
• Hexadecimal: 0x4EA3E1AB8
• Base-36: 9P48FY0

Squares and roots of 21109807800

• 21109807800 squared (21109807800²) is 445623985352940840000
• 21109807800 cubed (21109807800³) is 9407036681870596297170552000000
• The square root of 21109807800 is 145292.1463810071
• The cube root of 21109807800 is 2763.7245713697

Scales and comparisons

• 21,109,807,800 seconds is equal to 671 years, 11 weeks, 5 days, 11 hours, 30 minutes.
• To count from 1 to 21,109,807,800 would take you about one thousand, three hundred forty-two 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 21109807800 cubic inches would be around 230.3 feet tall.

Recreational maths with 21109807800

• 21109807800 backwards is 00870890112
• 21109807800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21109807800's digits is 36
• More coming soon!