20189187720

Names of 20189187720

• Cardinal: 20189187720 can be written as Twenty billion, one hundred eighty-nine million, one hundred eighty-seven thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.018918772 × 10¹⁰

Factors of 20189187720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 121

Divisors of 20189187720

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 31 36 39 40 45 52 60 62 65 67 72 78 90 93 104 117 120 124 130 134 155 156 180 186 195 201 234 248 260 268 279 310 312 335 360 372 390 402 403 465 468 520 536 558 585 603 620 670 744 780 804 806 871 930 936 961 1005 1116 1170 1206 1209 1240 1340 1395 1560 1608 1612 1742 1860 1922 2010 2015 2077 2232 2340 2412 2418 2613 2680 2790 2883 3015 3224 3484 3627 3720 3844 4020 4030 4154 4355 4489 4680 4805 4824 4836 5226 5580 5766 6030 6045 6231 6968 7254 7688 7839 8040 8060 8308 8649 8710 8978 9610 9672 10385 10452 11160 11532 12060 12090 12462 12493 13065 13467 14415 14508 15678 16120 16616 17298 17420 17956 18135 18693 19220 20770 20904 22445 23064 24120 24180 24924 24986 26130 26934 27001 28830 29016 31155 31356 34596 34840 35912 36270 37386 37479 38440 39195 40401 41540 43245 44890 48360 49848 49972 52260 53868 54002 57660 58357 62310 62465 62712 64387 67335 69192 72540 74772 74958 78390 80802 81003 83080 86490 89780 93465 99944 104520 107736 108004 112437 115320 116714 124620 124930 128774 134670 135005 139159 145080 149544 149916 156780 161604 162006 172980 175071 179560 186930 187395 193161 202005 216008 224874 233428 243009 249240 249860 257548 269340 270010 278318 291785 299832 313560 321935 323208 324012 345960 350142 373860 374790 386322 404010 405015 417477 449748 466856 486018 499720 515096 525213 538680 540020 556636 562185 579483 583570 643870 648024 695795 700284 747720 749580 772644 808020 810030 834954 837031 875355 899496 965805 972036 1050426 1080040 1113272 1124370 1158966 1167140 1215045 1252431 1287740 1391590 1400568 1499160 1545288 1616040 1620060 1669908 1674062 1750710 1809067 1931610 1944072 2087385 2100852 2248740 2317932 2334280 2430090 2504862 2511093 2575480 2626065 2783180 2897415 3240120 3339816 3348124 3501420 3618134 3863220 4174770 4185155 4201704 4313929 4497480 4635864 4860180 5009724 5022186 5252130 5427201 5566360 5794830 6262155 6696248 7002840 7236268 7533279 7726440 8349540 8370310 8627858 9045335 9720360 10019448 10044372 10504260 10854402 11589660 12524310 12555465 12941787 14472536 15066558 16281603 16699080 16740620 17255716 18090670 20088744 21008520 21569645 21708804 23179320 25048620 25110930 25883574 27136005 30133116 32563206 33481240 34511432 36181340 37666395 38825361 43139290 43417608 50097240 50221860 51767148 54272010 56081077 60266232 64708935 65126412 72362680 75332790 77650722 81408015 86278580 100443720 103534296 108544020 112162154 129417870 130252824 150665580 155301444 162816030 168243231 172557160 194126805 217088040 224324308 258835740 280405385 301331160 310602888 325632060 336486462 388253610 448648616 504729693 517671480 560810770 651264120 672972924 776507220 841216155 1009459386 1121621540 1345945848 1553014440 1682432310 2018918772 2243243080 2523648465 3364864620 4037837544 5047296930 6729729240 10094593860 20189187720
• Sum of all divisors σ(n): 74121154380
• Sum of proper divisors (its aliquot sum) s(n): 53931966660
• 20189187720 is an abundant number, because the sum of its proper divisors (53931966660) is greater than itself. Its abundance is 33742778940

Bases of 20189187720

• Binary: 10010110011010111101000111010001000₂
• Hexadecimal: 0x4B35E8E88
• Base-36: 99W4CY0

Squares and roots of 20189187720

• 20189187720 squared (20189187720²) is 407603300793398798400
• 20189187720 cubed (20189187720³) is 8229179555009553277720035648000
• The square root of 20189187720 is 142088.6614758545
• The cube root of 20189187720 is 2722.9496781929

Scales and comparisons

• 20,189,187,720 seconds is equal to 641 years, 49 weeks, 4 days, 3 hours, 42 minutes.
• To count from 1 to 20,189,187,720 would take you about one thousand, two 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 20189187720 cubic inches would be around 226.9 feet tall.

Recreational maths with 20189187720

• 20189187720 backwards is 02778198102
• 20189187720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20189187720's digits is 45
• More coming soon!