21638448640
21,638,448,640 is an even composite number composed of six prime numbers multiplied together.
What does the number 21638448640 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 320 divisors.
21638448640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21638448640:
29 × 5 × 17 × 41 × 67 × 181
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 17 × 41 × 67 × 181)See below for interesting mathematical facts about the number 21638448640 from the Numbermatics database.
Names of 21638448640
- Cardinal: 21638448640 can be written as Twenty-one billion, six hundred thirty-eight million, four hundred forty-eight thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.163844864 × 1010
Factors of 21638448640
Divisors of 21638448640
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 4 5 8 10 16 17 20 32 34 40 41 64 67 68 80 82 85 128 134 136 160 164 170 181 205 256 268 272 320 328 335 340 362 410 512 536 544 640 656 670 680 697 724 820 905 1072 1088 1139 1280 1312 1340 1360 1394 1448 1640 1810 2144 2176 2278 2560 2624 2680 2720 2747 2788 2896 3077 3280 3485 3620 4288 4352 4556 5248 5360 5440 5494 5576 5695 5792 6154 6560 6970 7240 7421 8576 8704 9112 10496 10720 10880 10988 11152 11390 11584 12127 12308 13120 13735 13940 14480 14842 15385 17152 18224 20992 21440 21760 21976 22304 22780 23168 24254 24616 26240 27470 27880 28960 29684 30770 34304 36448 37105 42880 43520 43952 44608 45560 46336 46699 48508 49232 52480 54940 55760 57920 59368 60635 61540 72896 74210 85760 87904 89216 91120 92672 93398 97016 98464 104960 109880 111520 115840 118736 121270 123080 126157 145792 148420 171520 175808 178432 182240 186796 194032 196928 206159 219760 223040 231680 233495 237472 242540 246160 252314 291584 296840 351616 356864 364480 373592 388064 393856 412318 439520 446080 463360 466990 474944 485080 492320 497207 504628 583168 593680 630785 703232 728960 747184 776128 787712 824636 879040 892160 933980 949888 970160 984640 994414 1009256 1030795 1187360 1261570 1406464 1457920 1494368 1552256 1575424 1649272 1758080 1784320 1867960 1899776 1940320 1969280 1988828 2018512 2061590 2374720 2486035 2523140 2915840 2988736 3104512 3298544 3516160 3735920 3799552 3880640 3938560 3977656 4037024 4123180 4749440 4972070 5046280 5977472 6209024 6597088 7032320 7471840 7761280 7877120 7955312 8074048 8246360 8452519 9498880 9944140 10092560 11954944 13194176 14943680 15522560 15910624 16148096 16492720 16905038 18997760 19888280 20185120 23909888 26388352 29887360 31045120 31821248 32296192 32985440 33810076 39776560 40370240 42262595 52776704 59774720 63642496 64592384 65970880 67620152 79553120 80740480 84525190 105553408 119549440 127284992 131941760 135240304 159106240 161480960 169050380 254569984 263883520 270480608 318212480 322961920 338100760 527767040 540961216 636424960 676201520 1081922432 1272849920 1352403040 2163844864 2704806080 4327689728 5409612160 10819224320 21638448640
- Sum of all divisors σ(n): 57428699328
- Sum of proper divisors (its aliquot sum) s(n): 35790250688
- 21638448640 is an abundant number, because the sum of its proper divisors (35790250688) is greater than itself. Its abundance is 14151802048
Bases of 21638448640
- Binary: 101000010011100000010000110000000002
- Hexadecimal: 0x509C08600
- Base-36: 9XUZ1TS
Squares and roots of 21638448640
- 21638448640 squared (216384486402) is 468222459545917849600
- 21638448640 cubed (216384486403) is 10131607642978821110228844544000
-
The
square root of 21638448640 is 147100.1313391663 -
The
cube root of 21638448640 is 2786.6047538067
Scales and comparisons
How big is 21638448640?- 21,638,448,640 seconds is equal to 688 years, 1 week, 6 days, 10 minutes, 40 seconds.
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To count from 1 to 21,638,448,640 would take you about one thousand, three hundred seventy-six 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 21638448640 cubic inches would be around 232.2 feet tall.
Recreational maths with 21638448640
- 21638448640 backwards is 04684483612
- The number of decimal digits it has is: 11
- The sum of 21638448640's digits is 46
- More coming soon!
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