81049829840
81,049,829,840 is an even composite number composed of six prime numbers multiplied together.
81049829840 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 81049829840:
24 × 5 × 73 × 31 × 151 × 631
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 31 × 151 × 631)See below for interesting mathematical facts about the number 81049829840 from the Numbermatics database.
Names of 81049829840
- Cardinal: 81049829840 can be written as Eighty-one billion, forty-nine million, eight hundred twenty-nine thousand, eight hundred forty.
Scientific notation
- Scientific notation: 8.104982984 × 1010
Factors of 81049829840
Divisors of 81049829840
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 31 35 40 49 56 62 70 80 98 112 124 140 151 155 196 217 245 248 280 302 310 343 392 434 490 496 560 604 620 631 686 755 784 868 980 1057 1085 1208 1240 1262 1372 1510 1519 1715 1736 1960 2114 2170 2416 2480 2524 2744 3020 3038 3155 3430 3472 3920 4228 4340 4417 4681 5048 5285 5488 6040 6076 6310 6860 7399 7595 8456 8680 8834 9362 10096 10570 10633 12080 12152 12620 13720 14798 15190 16912 17360 17668 18724 19561 21140 21266 22085 23405 24304 25240 27440 29596 30380 30919 32767 35336 36995 37448 39122 42280 42532 44170 46810 50480 51793 53165 59192 60760 61838 65534 70672 73990 74896 78244 84560 85064 88340 93620 95281 97805 103586 106330 118384 121520 123676 131068 136927 147980 154595 156488 163835 170128 176680 187240 190562 195610 207172 212660 216433 229369 247352 258965 262136 273854 295960 309190 312976 327670 353360 374480 381124 391220 414344 425320 432866 458738 476405 494704 517930 524272 547708 591920 618380 655340 666967 684635 762248 782440 828688 850640 865732 917476 952810 958489 1035860 1082165 1095416 1146845 1236760 1310680 1333934 1369270 1524496 1564880 1605583 1731464 1834952 1905620 1916978 2071720 2164330 2190832 2293690 2473520 2621360 2667868 2738540 2953711 3211166 3334835 3462928 3669904 3811240 3833956 4143440 4328660 4587380 4668769 4792445 5335736 5477080 5907422 6422332 6669670 6709423 7622480 7667912 8027915 8657320 9174760 9337538 9584890 10671472 10954160 11814844 12844664 13339340 13418846 14768555 15335824 16055830 17314640 18349520 18675076 19169780 20675977 23343845 23629688 25689328 26678680 26837692 29537110 32111660 32681383 33547115 37350152 38339560 41351954 46687690 47259376 53357360 53675384 59074220 64223320 65362766 67094230 74700304 76679120 82703908 93375380 103379885 107350768 118148440 128446640 130725532 134188460 144731839 163406915 165407816 186750760 206759770 236296880 261451064 268376920 289463678 326813830 330815632 373501520 413519540 522902128 536753840 578927356 653627660 723659195 827039080 1013122873 1157854712 1307255320 1447318390 1654078160 2026245746 2315709424 2614510640 2894636780 4052491492 5065614365 5789273560 8104982984 10131228730 11578547120 16209965968 20262457460 40524914920 81049829840
- Sum of all divisors σ(n): 228709171200
- Sum of proper divisors (its aliquot sum) s(n): 147659341360
- 81049829840 is an abundant number, because the sum of its proper divisors (147659341360) is greater than itself. Its abundance is 66609511520
Bases of 81049829840
- Binary: 10010110111101111001001000001110100002
- Hexadecimal: 0x12DEF241D0
- Base-36: 118EZ4Y8
Squares and roots of 81049829840
- 81049829840 squared (810498298402) is 6569074917092954425600
- 81049829840 cubed (810498298403) is 532422404236596063657754939904000
-
The
square root of 81049829840 is 284692.5180611529 -
The
cube root of 81049829840 is 4327.6357767645
Scales and comparisons
How big is 81049829840?- 81,049,829,840 seconds is equal to 2,577 years, 6 weeks, 6 days, 17 hours, 37 minutes, 20 seconds.
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To count from 1 to 81,049,829,840 would take you about five thousand, one hundred fifty-four 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 81049829840 cubic inches would be around 360.6 feet tall.
Recreational maths with 81049829840
- 81049829840 backwards is 04892894018
- The number of decimal digits it has is: 11
- The sum of 81049829840's digits is 53
- More coming soon!
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