81420288000
81,420,288,000 is an even composite number composed of four prime numbers multiplied together.
81420288000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred seventy-two divisors.
Prime factorization of 81420288000:
216 × 3 × 53 × 3313
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 5 × 3313)See below for interesting mathematical facts about the number 81420288000 from the Numbermatics database.
Names of 81420288000
- Cardinal: 81420288000 can be written as Eighty-one billion, four hundred twenty million, two hundred eighty-eight thousand.
Scientific notation
- Scientific notation: 8.1420288 × 1010
Factors of 81420288000
Divisors of 81420288000
- Number of divisors d(n): 272
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 96 100 120 125 128 150 160 192 200 240 250 256 300 320 375 384 400 480 500 512 600 640 750 768 800 960 1000 1024 1200 1280 1500 1536 1600 1920 2000 2048 2400 2560 3000 3072 3200 3313 3840 4000 4096 4800 5120 6000 6144 6400 6626 7680 8000 8192 9600 9939 10240 12000 12288 12800 13252 15360 16000 16384 16565 19200 19878 20480 24000 24576 25600 26504 30720 32000 32768 33130 38400 39756 40960 48000 49152 49695 51200 53008 61440 64000 65536 66260 76800 79512 81920 82825 96000 98304 99390 102400 106016 122880 128000 132520 153600 159024 163840 165650 192000 196608 198780 204800 212032 245760 248475 256000 265040 307200 318048 327680 331300 384000 397560 409600 414125 424064 491520 496950 512000 530080 614400 636096 662600 768000 795120 819200 828250 848128 983040 993900 1024000 1060160 1228800 1242375 1272192 1325200 1536000 1590240 1638400 1656500 1696256 1987800 2048000 2120320 2457600 2484750 2544384 2650400 3072000 3180480 3313000 3392512 3975600 4096000 4240640 4915200 4969500 5088768 5300800 6144000 6360960 6626000 6785024 7951200 8192000 8481280 9939000 10177536 10601600 12288000 12721920 13252000 13570048 15902400 16962560 19878000 20355072 21203200 24576000 25443840 26504000 27140096 31804800 33925120 39756000 40710144 42406400 50887680 53008000 54280192 63609600 67850240 79512000 81420288 84812800 101775360 106016000 108560384 127219200 135700480 159024000 162840576 169625600 203550720 212032000 217120768 254438400 271400960 318048000 325681152 339251200 407101440 424064000 508876800 542801920 636096000 651362304 678502400 814202880 848128000 1017753600 1085603840 1272192000 1357004800 1628405760 1696256000 2035507200 2544384000 2714009600 3256811520 3392512000 4071014400 5088768000 5428019200 6785024000 8142028800 10177536000 13570048000 16284057600 20355072000 27140096000 40710144000 81420288000
- Sum of all divisors σ(n): 271046439456
- Sum of proper divisors (its aliquot sum) s(n): 189626151456
- 81420288000 is an abundant number, because the sum of its proper divisors (189626151456) is greater than itself. Its abundance is 108205863456
Bases of 81420288000
- Binary: 10010111101010000011100000000000000002
- Hexadecimal: 0x12F5070000
- Base-36: 11EJJCAO
Squares and roots of 81420288000
- 81420288000 squared (814202880002) is 6629263298002944000000
- 81420288000 cubed (814202880003) is 539756526951229525327872000000000
-
The
square root of 81420288000 is 285342.4048402199 -
The
cube root of 81420288000 is 4334.2192639651
Scales and comparisons
How big is 81420288000?- 81,420,288,000 seconds is equal to 2,588 years, 47 weeks, 3 days, 10 hours, 40 minutes.
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To count from 1 to 81,420,288,000 would take you about five thousand, one hundred seventy-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 81420288000 cubic inches would be around 361.2 feet tall.
Recreational maths with 81420288000
- 81420288000 backwards is 00088202418
- The number of decimal digits it has is: 11
- The sum of 81420288000's digits is 33
- More coming soon!
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