21090973840
21,090,973,840 is an even composite number composed of seven prime numbers multiplied together.
21090973840 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21090973840:
24 × 5 × 17 × 29 × 37 × 97 × 149
(2 × 2 × 2 × 2 × 5 × 17 × 29 × 37 × 97 × 149)See below for interesting mathematical facts about the number 21090973840 from the Numbermatics database.
Names of 21090973840
- Cardinal: 21090973840 can be written as Twenty-one billion, ninety million, nine hundred seventy-three thousand, eight hundred forty.
Scientific notation
- Scientific notation: 2.109097384 × 1010
Factors of 21090973840
Divisors of 21090973840
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 4 5 8 10 16 17 20 29 34 37 40 58 68 74 80 85 97 116 136 145 148 149 170 185 194 232 272 290 296 298 340 370 388 464 485 493 580 592 596 629 680 740 745 776 970 986 1073 1160 1192 1258 1360 1480 1490 1552 1649 1940 1972 2146 2320 2384 2465 2516 2533 2813 2960 2980 3145 3298 3589 3880 3944 4292 4321 4930 5032 5066 5365 5513 5626 5960 6290 6596 7178 7760 7888 8245 8584 8642 9860 10064 10132 10730 11026 11252 11920 12580 12665 13192 14065 14356 14453 16490 17168 17284 17945 18241 19720 20264 21460 21605 22052 22504 25160 25330 26384 27565 28130 28712 28906 32980 34568 35890 36482 39440 40528 42920 43210 44104 45008 47821 50320 50660 55130 56260 57424 57812 61013 65960 69136 71780 72265 72964 73457 85840 86420 88208 91205 93721 95642 101320 104081 110260 112520 115624 122026 131920 143560 144530 145928 146914 159877 172840 182410 187442 191284 202640 208162 220520 225040 231248 239105 244052 245701 287120 289060 291856 293828 305065 319754 345680 364820 367285 374884 382568 416324 419137 441040 468605 478210 488104 491402 520405 534761 578120 587656 610130 639508 729640 734570 749768 765136 799385 832648 838274 937210 956420 976208 982804 1040810 1069522 1156240 1175312 1220260 1228505 1279016 1459280 1469140 1499536 1598770 1665296 1676548 1769377 1874420 1912840 1965608 2081620 2095685 2139044 2440520 2457010 2558032 2673805 2717909 2938280 3197540 3353096 3538754 3748840 3825680 3931216 4163240 4191370 4278088 4881040 4914020 5347610 5435818 5876560 6395080 6706192 7077508 7125329 7497680 8326480 8382740 8556176 8846885 9090937 9828040 10695220 10871636 12790160 13589545 14155016 14250658 15508069 16765480 17693770 18181874 19656080 21390440 21743272 27179090 28310032 28501316 31016138 33530960 35387540 35626645 36363748 42780880 43486544 45454685 54358180 57002632 62032276 70775080 71253290 72727496 77540345 90909370 108716360 114005264 124064552 141550160 142506580 145454992 155080690 181818740 217432720 248129104 263637173 285013160 310161380 363637480 527274346 570026320 620322760 727274960 1054548692 1240645520 1318185865 2109097384 2636371730 4218194768 5272743460 10545486920 21090973840
- Sum of all divisors σ(n): 56105784000
- Sum of proper divisors (its aliquot sum) s(n): 35014810160
- 21090973840 is an abundant number, because the sum of its proper divisors (35014810160) is greater than itself. Its abundance is 13923836320
Bases of 21090973840
- Binary: 100111010010001111010111000100100002
- Hexadecimal: 0x4E91EB890
- Base-36: 9OT0RKG
Squares and roots of 21090973840
- 21090973840 squared (210909738402) is 444829177519564345600
- 21090973840 cubed (210909738403) is 9381880546333847701246319104000
-
The
square root of 21090973840 is 145227.3178158985 -
The
cube root of 21090973840 is 2762.9024043109
Scales and comparisons
How big is 21090973840?- 21,090,973,840 seconds is equal to 670 years, 32 weeks, 4 days, 11 hours, 50 minutes, 40 seconds.
-
To count from 1 to 21,090,973,840 would take you about one thousand, three hundred forty-one 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 21090973840 cubic inches would be around 230.2 feet tall.
Recreational maths with 21090973840
- 21090973840 backwards is 04837909012
- The number of decimal digits it has is: 11
- The sum of 21090973840's digits is 43
- More coming soon!
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