640128006400
640,128,006,400 is an even composite number composed of four prime numbers multiplied together.
640128006400 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred forty-three divisors.
Prime factorization of 640128006400:
28 × 52 × 732 × 1372
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 73 × 73 × 137 × 137)See below for interesting mathematical facts about the number 640128006400 from the Numbermatics database.
Names of 640128006400
- Cardinal: 640128006400 can be written as Six hundred forty billion, one hundred twenty-eight million, six thousand, four hundred.
Scientific notation
- Scientific notation: 6.401280064 × 1011
Factors of 640128006400
Divisors of 640128006400
- Number of divisors d(n): 243
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Complete list of divisors:
1 2 4 5 8 10 16 20 25 32 40 50 64 73 80 100 128 137 146 160 200 256 274 292 320 365 400 548 584 640 685 730 800 1096 1168 1280 1370 1460 1600 1825 2192 2336 2740 2920 3200 3425 3650 4384 4672 5329 5480 5840 6400 6850 7300 8768 9344 10001 10658 10960 11680 13700 14600 17536 18688 18769 20002 21316 21920 23360 26645 27400 29200 35072 37538 40004 42632 43840 46720 50005 53290 54800 58400 75076 80008 85264 87680 93440 93845 100010 106580 109600 116800 133225 150152 160016 170528 175360 187690 200020 213160 219200 233600 250025 266450 300304 320032 341056 375380 400040 426320 438400 467200 469225 500050 532900 600608 640064 682112 730073 750760 800080 852640 876800 938450 1000100 1065800 1201216 1280128 1364224 1370137 1460146 1501520 1600160 1705280 1876900 2000200 2131600 2402432 2560256 2740274 2920292 3003040 3200320 3410560 3650365 3753800 4000400 4263200 4804864 5480548 5840584 6006080 6400640 6821120 6850685 7300730 7507600 8000800 8526400 10961096 11681168 12012160 12801280 13701370 14601460 15015200 16001600 17052800 18251825 21922192 23362336 24024320 27402740 29202920 30030400 32003200 34105600 34253425 36503650 43844384 46724672 54805480 58405840 60060800 64006400 68506850 73007300 87688768 93449344 100020001 109610960 116811680 120121600 137013700 146014600 175377536 186898688 200040002 219221920 233623360 274027400 292029200 350755072 400080004 438443840 467246720 500100005 548054800 584058400 800160008 876887680 934493440 1000200010 1096109600 1168116800 1600320016 1753775360 2000400020 2192219200 2336233600 2500500025 3200640032 4000800040 4384438400 4672467200 5001000050 6401280064 8001600080 8768876800 10002000100 12802560128 16003200160 20004000200 25605120256 32006400320 40008000400 64012800640 80016000800 128025601280 160032001600 320064003200 640128006400
- Sum of all divisors σ(n): 1618229767161
- Sum of proper divisors (its aliquot sum) s(n): 978101760761
- 640128006400 is an abundant number, because the sum of its proper divisors (978101760761) is greater than itself. Its abundance is 337973754361
Bases of 640128006400
- Binary: 10010101000010101001101000111001000000002
- Hexadecimal: 0x950A9A3900
- Base-36: 862JOQV4
Squares and roots of 640128006400
- 640128006400 squared (6401280064002) is 409763864577638440960000
- 640128006400 cubed (6401280064003) is 262301325726843273231728902144000000
-
640128006400 is a
perfect square number . Itssquare root is 800080 -
The
cube root of 640128006400 is 8618.3132664701
Scales and comparisons
How big is 640128006400?- 640,128,006,400 seconds is equal to 20,354 years, 4 weeks, 4 days, 23 hours, 6 minutes, 40 seconds.
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To count from 1 to 640,128,006,400 would take you about forty thousand, seven hundred 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 640128006400 cubic inches would be around 718.2 feet tall.
Recreational maths with 640128006400
- 640128006400 backwards is 004600821046
- The number of decimal digits it has is: 12
- The sum of 640128006400's digits is 31
- More coming soon!
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