81731133120
81,731,133,120 is an even composite number composed of seven prime numbers multiplied together.
81731133120 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred forty-eight divisors.
Prime factorization of 81731133120:
26 × 3 × 5 × 7 × 13 × 71 × 13177
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 13 × 71 × 13177)See below for interesting mathematical facts about the number 81731133120 from the Numbermatics database.
Names of 81731133120
- Cardinal: 81731133120 can be written as Eighty-one billion, seven hundred thirty-one million, one hundred thirty-three thousand, one hundred twenty.
Scientific notation
- Scientific notation: 8.173113312 × 1010
Factors of 81731133120
Divisors of 81731133120
- Number of divisors d(n): 448
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 13 14 15 16 20 21 24 26 28 30 32 35 39 40 42 48 52 56 60 64 65 70 71 78 80 84 91 96 104 105 112 120 130 140 142 156 160 168 182 192 195 208 210 213 224 240 260 273 280 284 312 320 336 355 364 390 416 420 426 448 455 480 497 520 546 560 568 624 672 710 728 780 832 840 852 910 923 960 994 1040 1065 1092 1120 1136 1248 1344 1365 1420 1456 1491 1560 1680 1704 1820 1846 1988 2080 2130 2184 2240 2272 2485 2496 2730 2769 2840 2912 2982 3120 3360 3408 3640 3692 3976 4160 4260 4368 4544 4615 4970 5460 5538 5680 5824 5964 6240 6461 6720 6816 7280 7384 7455 7952 8520 8736 9230 9940 10920 11076 11360 11928 12480 12922 13177 13632 13845 14560 14768 14910 15904 17040 17472 18460 19383 19880 21840 22152 22720 23856 25844 26354 27690 29120 29536 29820 31808 32305 34080 36920 38766 39531 39760 43680 44304 47712 51688 52708 55380 59072 59640 64610 65885 68160 73840 77532 79062 79520 87360 88608 92239 95424 96915 103376 105416 110760 119280 129220 131770 147680 155064 158124 159040 171301 177216 184478 193830 197655 206752 210832 221520 238560 258440 263540 276717 295360 310128 316248 342602 368956 387660 395310 413504 421664 443040 461195 477120 513903 516880 527080 553434 620256 632496 685204 737912 775320 790620 843328 856505 886080 922390 935567 1027806 1033760 1054160 1106868 1199107 1240512 1264992 1370408 1383585 1475824 1550640 1581240 1713010 1844780 1871134 2055612 2067520 2108320 2213736 2398214 2529984 2569515 2740816 2767170 2806701 2951648 3101280 3162480 3426020 3597321 3689560 3742268 4111224 4216640 4427472 4677835 4796428 5139030 5481632 5534340 5613402 5903296 5995535 6202560 6324960 6548969 6852040 7194642 7379120 7484536 8222448 8854944 9355670 9592856 10278060 10963264 11068680 11226804 11991070 12162371 12649920 13097938 13704080 14033505 14389284 14758240 14969072 16444896 17709888 17986605 18711340 19185712 19646907 20556120 22137360 22453608 23982140 24324742 26195876 27408160 28067010 28778568 29516480 29938144 32744845 32889792 35973210 36487113 37422680 38371424 39293814 41112240 44274720 44907216 47964280 48649484 52391752 54816320 56134020 57557136 59876288 60811855 65489690 71946420 72974226 74845360 76742848 78587628 82224480 85136597 88549440 89814432 95928560 97298968 98234535 104783504 112268040 115114272 121623710 130979380 143892840 145948452 149690720 157175256 164448960 170273194 179628864 182435565 191857120 194597936 196469070 209567008 224536080 230228544 243247420 255409791 261958760 287785680 291896904 299381440 314350512 340546388 364871130 383714240 389195872 392938140 419134016 425682985 449072160 486494840 510819582 523917520 575571360 583793808 628701024 681092776 729742260 778391744 785876280 851365970 898144320 972989680 1021639164 1047835040 1151142720 1167587616 1257402048 1277048955 1362185552 1459484520 1571752560 1702731940 1945979360 2043278328 2095670080 2335175232 2554097910 2724371104 2918969040 3143505120 3405463880 3891958720 4086556656 5108195820 5448742208 5837938080 6287010240 6810927760 8173113312 10216391640 11675876160 13621855520 16346226624 20432783280 27243711040 40865566560 81731133120
- Sum of all divisors σ(n): 323903010816
- Sum of proper divisors (its aliquot sum) s(n): 242171877696
- 81731133120 is an abundant number, because the sum of its proper divisors (242171877696) is greater than itself. Its abundance is 160440744576
Bases of 81731133120
- Binary: 10011000001111000111000011110110000002
- Hexadecimal: 0x13078E1EC0
- Base-36: 11JOLTXC
Squares and roots of 81731133120
- 81731133120 squared (817311331202) is 6679978121079160934400
- 81731133120 cubed (817311331203) is 545962181052608380387349987328000
-
The
square root of 81731133120 is 285886.5738715267 -
The
cube root of 81731133120 is 4339.7279647141
Scales and comparisons
How big is 81731133120?- 81,731,133,120 seconds is equal to 2,598 years, 41 weeks, 3 days, 4 hours, 32 minutes.
-
To count from 1 to 81,731,133,120 would take you about five thousand, one hundred ninety-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 81731133120 cubic inches would be around 361.6 feet tall.
Recreational maths with 81731133120
- 81731133120 backwards is 02133113718
- 81731133120 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81731133120's digits is 30
- More coming soon!
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