81427194240
81,427,194,240 is an even composite number composed of six prime numbers multiplied together.
81427194240 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 81427194240:
27 × 3 × 5 × 7 × 43 × 140897
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 43 × 140897)See below for interesting mathematical facts about the number 81427194240 from the Numbermatics database.
Names of 81427194240
- Cardinal: 81427194240 can be written as Eighty-one billion, four hundred twenty-seven million, one hundred ninety-four thousand, two hundred forty.
Scientific notation
- Scientific notation: 8.142719424 × 1010
Factors of 81427194240
Divisors of 81427194240
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 43 48 56 60 64 70 80 84 86 96 105 112 120 128 129 140 160 168 172 192 210 215 224 240 258 280 301 320 336 344 384 420 430 448 480 516 560 602 640 645 672 688 840 860 896 903 960 1032 1120 1204 1290 1344 1376 1505 1680 1720 1806 1920 2064 2240 2408 2580 2688 2752 3010 3360 3440 3612 4128 4480 4515 4816 5160 5504 6020 6720 6880 7224 8256 9030 9632 10320 12040 13440 13760 14448 16512 18060 19264 20640 24080 27520 28896 36120 38528 41280 48160 57792 72240 82560 96320 115584 140897 144480 192640 281794 288960 422691 563588 577920 704485 845382 986279 1127176 1408970 1690764 1972558 2113455 2254352 2817940 2958837 3381528 3945116 4226910 4508704 4931395 5635880 5917674 6058571 6763056 7890232 8453820 9017408 9862790 11271760 11835348 12117142 13526112 14794185 15780464 16907640 18034816 18175713 19725580 22543520 23670696 24234284 27052224 29588370 30292855 31560928 33815280 36351426 39451160 42409997 45087040 47341392 48468568 54104448 59176740 60585710 63121856 67630560 72702852 78902320 84819994 90174080 90878565 94682784 96937136 118353480 121171420 126243712 127229991 135261120 145405704 157804640 169639988 181757130 189365568 193874272 212049985 236706960 242342840 254459982 270522240 290811408 315609280 339279976 363514260 378731136 387748544 424099970 473413920 484685680 508919964 581622816 631218560 636149955 678559952 727028520 775497088 848199940 946827840 969371360 1017839928 1163245632 1272299910 1357119904 1454057040 1696399880 1893655680 1938742720 2035679856 2326491264 2544599820 2714239808 2908114080 3392799760 3877485440 4071359712 5089199640 5428479616 5816228160 6785599520 8142719424 10178399280 11632456320 13571199040 16285438848 20356798560 27142398080 40713597120 81427194240
- Sum of all divisors σ(n): 303528107520
- Sum of proper divisors (its aliquot sum) s(n): 222100913280
- 81427194240 is an abundant number, because the sum of its proper divisors (222100913280) is greater than itself. Its abundance is 140673719040
Bases of 81427194240
- Binary: 10010111101010111000001100001100000002
- Hexadecimal: 0x12F5706180
- Base-36: 11ENND6O
Squares and roots of 81427194240
- 81427194240 squared (814271942402) is 6630387961798689177600
- 81427194240 cubed (814271942403) is 539893888451939563441821057024000
-
The
square root of 81427194240 is 285354.5062549389 -
The
cube root of 81427194240 is 4334.3418063635
Scales and comparisons
How big is 81427194240?- 81,427,194,240 seconds is equal to 2,589 years, 6 weeks, 6 days, 9 hours, 4 minutes.
-
To count from 1 to 81,427,194,240 would take you about five thousand, one hundred seventy-eight 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 81427194240 cubic inches would be around 361.2 feet tall.
Recreational maths with 81427194240
- 81427194240 backwards is 04249172418
- 81427194240 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81427194240's digits is 42
- More coming soon!
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