21211137920
21,211,137,920 is an even composite number composed of six prime numbers multiplied together.
21211137920 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 21211137920:
27 × 5 × 7 × 19 × 211 × 1181
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 19 × 211 × 1181)See below for interesting mathematical facts about the number 21211137920 from the Numbermatics database.
Names of 21211137920
- Cardinal: 21211137920 can be written as Twenty-one billion, two hundred eleven million, one hundred thirty-seven thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.121113792 × 1010
Factors of 21211137920
Divisors of 21211137920
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 19 20 28 32 35 38 40 56 64 70 76 80 95 112 128 133 140 152 160 190 211 224 266 280 304 320 380 422 448 532 560 608 640 665 760 844 896 1055 1064 1120 1181 1216 1330 1477 1520 1688 2110 2128 2240 2362 2432 2660 2954 3040 3376 4009 4220 4256 4480 4724 5320 5905 5908 6080 6752 7385 8018 8267 8440 8512 9448 10640 11810 11816 12160 13504 14770 16036 16534 16880 17024 18896 20045 21280 22439 23620 23632 27008 28063 29540 32072 33068 33760 37792 40090 41335 42560 44878 47240 47264 56126 59080 64144 66136 67520 75584 80180 82670 85120 89756 94480 94528 112195 112252 118160 128288 132272 135040 140315 151168 157073 160360 165340 179512 188960 189056 224390 224504 236320 249191 256576 264544 280630 314146 320720 330680 359024 377920 448780 449008 472640 498382 513152 529088 561260 628292 641440 661360 718048 755840 785365 897560 898016 945280 996764 1058176 1122520 1245955 1256584 1282880 1322720 1436096 1570730 1744337 1795120 1796032 1993528 2245040 2491910 2513168 2565760 2645440 2872192 3141460 3488674 3590240 3592064 3987056 4490080 4734629 4983820 5026336 5290880 6282920 6977348 7180480 7974112 8721685 8980160 9469258 9967640 10052672 12565840 13954696 14360960 15948224 17443370 17960320 18938516 19935280 20105344 23673145 25131680 27909392 31896448 33142403 34886740 37877032 39870560 47346290 50263360 55818784 66284806 69773480 75754064 79741120 94692580 100526720 111637568 132569612 139546960 151508128 159482240 165712015 189385160 223275136 265139224 279093920 303016256 331424030 378770320 530278448 558187840 606032512 662848060 757540640 1060556896 1116375680 1325696120 1515081280 2121113792 2651392240 3030162560 4242227584 5302784480 10605568960 21211137920
- Sum of all divisors σ(n): 61342963200
- Sum of proper divisors (its aliquot sum) s(n): 40131825280
- 21211137920 is an abundant number, because the sum of its proper divisors (40131825280) is greater than itself. Its abundance is 18920687360
Bases of 21211137920
- Binary: 100111100000100100001000111100000002
- Hexadecimal: 0x4F0484780
- Base-36: 9QSKARK
Squares and roots of 21211137920
- 21211137920 squared (212111379202) is 449912371861261926400
- 21211137920 cubed (212111379203) is 9543153371463553826115289088000
-
The
square root of 21211137920 is 145640.4405376473 -
The
cube root of 21211137920 is 2768.1396067113
Scales and comparisons
How big is 21211137920?- 21,211,137,920 seconds is equal to 674 years, 23 weeks, 2 days, 6 hours, 45 minutes, 20 seconds.
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To count from 1 to 21,211,137,920 would take you about one thousand, three hundred forty-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 21211137920 cubic inches would be around 230.7 feet tall.
Recreational maths with 21211137920
- 21211137920 backwards is 02973111212
- The number of decimal digits it has is: 11
- The sum of 21211137920's digits is 29
- More coming soon!
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