72161991000

Names of 72161991000

• Cardinal: 72161991000 can be written as Seventy-two billion, one hundred sixty-one million, nine hundred ninety-one thousand.

Scientific notation

• Scientific notation: 7.2161991 × 10¹⁰

Factors of 72161991000

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 900

Divisors of 72161991000

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 17 18 20 22 24 25 30 33 34 36 40 44 45 50 51 53 55 60 66 68 72 75 85 88 90 99 100 102 106 110 120 125 132 136 150 153 159 165 170 180 187 198 200 204 212 220 225 250 255 264 265 275 300 306 318 330 340 360 374 375 396 408 424 425 440 450 477 495 500 510 530 550 561 583 600 612 636 660 680 748 750 765 792 795 809 825 850 900 901 935 954 990 1000 1020 1060 1100 1122 1125 1166 1224 1272 1275 1320 1325 1375 1496 1500 1530 1590 1618 1650 1683 1700 1749 1800 1802 1870 1908 1980 2040 2120 2125 2200 2244 2250 2332 2385 2427 2475 2550 2650 2703 2750 2805 2915 3000 3060 3180 3236 3300 3366 3400 3498 3604 3740 3816 3825 3960 3975 4045 4125 4250 4488 4500 4505 4664 4675 4770 4854 4950 5100 5247 5300 5406 5500 5610 5830 6120 6360 6375 6472 6600 6625 6732 6996 7208 7281 7480 7650 7950 8090 8109 8250 8415 8500 8745 8899 9000 9010 9350 9540 9708 9900 9911 10200 10494 10600 10812 11000 11220 11660 11925 12135 12375 12750 13250 13464 13515 13753 13992 14025 14562 14575 15300 15900 16180 16218 16500 16830 17000 17490 17798 18020 18700 19080 19125 19416 19800 19822 19875 20225 20988 21624 22440 22525 23320 23375 23850 24270 24750 25500 26235 26500 26697 27030 27506 28050 29124 29150 29733 30600 31800 32360 32436 33000 33660 34980 35596 36040 36405 37400 38250 39644 39750 40450 40545 41259 41976 42075 42877 43725 44495 45050 46750 47700 48540 49500 49555 51000 52470 53000 53394 54060 55012 56100 58248 58300 59466 59625 60675 64872 67320 67575 68765 69960 70125 71192 72810 72875 76500 79288 79500 80091 80900 81090 82518 84150 85754 87450 88990 89199 90100 93500 95400 97080 99000 99110 101125 104940 106788 108120 110024 112200 112625 116600 118932 119250 121350 123777 128631 131175 133485 135150 137530 140250 145620 145750 148665 151283 153000 159000 160182 161800 162180 165036 168300 171508 174900 177980 178398 180200 182025 187000 198220 202250 202725 206295 209880 210375 213576 214385 218625 222475 225250 237864 238500 242700 247554 247775 257262 262350 266970 270300 275060 280500 291240 291500 297330 302566 303375 320364 324360 330072 336600 337875 343016 343825 349800 355960 356796 364050 385893 396440 400455 404500 405450 412590 420750 428770 437250 444950 445995 450500 453849 471647 477000 485400 495108 495550 514524 524700 533940 540600 550120 561000 583000 594660 605132 606750 618885 640728 643155 655875 667425 675750 687650 713592 728100 728909 743325 756415 771786 800910 809000 810900 825180 841500 857540 874500 889900 891990 901000 907698 910125 943294 990216 991100 1013625 1029048 1031475 1049400 1067880 1071925 1112375 1189320 1210264 1213500 1237770 1238875 1286310 1311750 1334850 1351500 1361547 1375300 1414941 1456200 1457818 1486650 1512830 1543572 1601820 1621800 1650360 1683000 1715080 1719125 1749000 1779800 1783980 1815396 1820250 1886588 1929465 1982200 2002275 2027250 2062950 2143850 2186727 2224750 2229975 2269245 2358235 2427000 2475540 2477750 2572620 2623500 2669700 2703000 2723094 2750600 2829882 2915636 2973300 3025660 3087144 3094425 3203640 3215775 3337125 3438250 3567960 3630792 3640500 3644545 3716625 3773176 3782075 3858930 4004550 4054500 4125900 4244823 4287700 4373454 4449500 4459950 4538490 4716470 4951080 4955500 5145240 5157375 5247000 5339400 5359625 5446188 5659764 5831272 5946600 6051320 6188850 6431550 6560181 6674250 6807735 6876500 7074705 7281000 7289090 7433250 7564150 7717860 8009100 8017999 8109000 8251800 8489646 8575400 8746908 8899000 8919900 9076980 9432940 9647325 9911000 10011375 10314750 10719250 10892376 10933635 11149875 11319528 11346225 11791175 12377700 12863100 13120362 13348500 13615470 13753000 14149410 14578180 14866500 15128300 15435720 15472125 16018200 16035998 16078875 16979292 17493816 17839800 18153960 18222725 18865880 18910375 19294650 20022750 20629500 21224115 21438500 21867270 22299750 22692450 23582350 24053997 24755400 25726200 26240724 26697000 27230940 28298820 29156360 29733000 30256600 30944250 32071996 32157750 32800905 33958584 34038675 35373525 36445450 37820750 38589300 40045500 40089995 41259000 42448230 42877000 43734540 44599500 45384900 47164700 48107994 48236625 52481448 54461880 54668175 56597640 56731125 58955875 61888500 64143992 64315500 65601810 68077350 70747050 72161991 72890900 75641500 77178600 80091000 80179990 84896460 87469080 89199000 90769800 91113625 94329400 96215988 96473250 106120575 109336350 113462250 117911750 120269985 123777000 128631000 131203620 136154700 141494100 144323982 145781800 151283000 160359980 164004525 169792920 170193375 176867625 182227250 192431976 192946500 200449975 212241150 218672700 226924500 235823500 240539970 262407240 272309400 273340875 282988200 288647964 320719960 328009050 340386750 353735250 360809955 364454500 385893000 400899950 424482300 437345400 453849000 471647000 481079940 530602875 546681750 577295928 601349925 656018100 680773500 707470500 721619910 728909000 801799900 820022625 848964600 962159880 1002249875 1061205750 1093363500 1202699850 1312036200 1361547000 1414941000 1443239820 1603599800 1640045250 1804049775 2004499750 2122411500 2186727000 2405399700 2886479640 3006749625 3280090500 3608099550 4008999500 4244823000 4810799400 6013499250 6560181000 7216199100 8017999000 9020248875 12026998500 14432398200 18040497750 24053997000 36080995500 72161991000
• Sum of all divisors σ(n): 287403292800
• Sum of proper divisors (its aliquot sum) s(n): 215241301800
• 72161991000 is an abundant number, because the sum of its proper divisors (215241301800) is greater than itself. Its abundance is 143079310800

Bases of 72161991000

• Binary: 1000011001101001100001001100101011000₂
• Hexadecimal: 0x10CD309958
• Base-36: X5FDWM0

Squares and roots of 72161991000

• 72161991000 squared (72161991000²) is 5207352945084081000000
• 72161991000 cubed (72161991000³) is 375772956356980947365271000000000
• The square root of 72161991000 is 268629.8401146083
• The cube root of 72161991000 is 4163.2852615841

Scales and comparisons

• 72,161,991,000 seconds is equal to 2,294 years, 27 weeks, 3 days, 5 hours, 30 minutes.
• To count from 1 to 72,161,991,000 would take you about four thousand, five hundred eighty-nine 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 72161991000 cubic inches would be around 346.9 feet tall.

Recreational maths with 72161991000

• 72161991000 backwards is 00019916127
• 72161991000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 72161991000's digits is 36
• More coming soon!