21004388640
21,004,388,640 is an even composite number composed of five prime numbers multiplied together.
21004388640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 21004388640:
25 × 34 × 5 × 61 × 1632
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 61 × 163 × 163)See below for interesting mathematical facts about the number 21004388640 from the Numbermatics database.
Names of 21004388640
- Cardinal: 21004388640 can be written as Twenty-one billion, four million, three hundred eighty-eight thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.100438864 × 1010
Factors of 21004388640
Divisors of 21004388640
- Number of divisors d(n): 360
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 61 72 80 81 90 96 108 120 122 135 144 160 162 163 180 183 216 240 244 270 288 305 324 326 360 366 405 432 480 488 489 540 549 610 648 652 720 732 810 815 864 915 976 978 1080 1098 1220 1296 1304 1440 1464 1467 1620 1630 1647 1830 1952 1956 2160 2196 2440 2445 2592 2608 2745 2928 2934 3240 3260 3294 3660 3912 4320 4392 4401 4880 4890 4941 5216 5490 5856 5868 6480 6520 6588 7320 7335 7824 8235 8784 8802 9760 9780 9882 9943 10980 11736 12960 13040 13176 13203 14640 14670 15648 16470 17568 17604 19560 19764 19886 21960 22005 23472 24705 26080 26352 26406 26569 29280 29340 29829 32940 35208 39120 39528 39772 43920 44010 46944 49410 49715 52704 52812 53138 58680 59658 65880 66015 70416 78240 79056 79544 79707 87840 88020 89487 98820 99430 105624 106276 117360 119316 131760 132030 132845 140832 149145 158112 159088 159414 176040 178974 197640 198860 211248 212552 234720 238632 239121 263520 264060 265690 268461 298290 318176 318828 352080 357948 395280 397720 398535 422496 425104 447435 477264 478242 528120 531380 536922 596580 637656 704160 715896 717363 790560 795440 797070 805383 850208 894870 954528 956484 1056240 1062760 1073844 1193160 1195605 1275312 1342305 1431792 1434726 1590880 1594140 1610766 1620709 1789740 1912968 2112480 2125520 2147688 2152089 2386320 2391210 2550624 2684610 2863584 2869452 3188280 3221532 3241418 3579480 3586815 3825936 4026915 4251040 4295376 4304178 4772640 4782420 4862127 5369220 5738904 6376560 6443064 6482836 7158960 7173630 7651872 8053830 8103545 8590752 8608356 9564840 9724254 10738440 10760445 11477808 12753120 12886128 12965672 14317920 14347260 14586381 16107660 16207090 17216712 19129680 19448508 21476880 21520890 22955616 24310635 25772256 25931344 28694520 29172762 32215320 32414180 34433424 38259360 38897016 42953760 43041780 43759143 48621270 51862688 57389040 58345524 64430640 64828360 68866848 72931905 77794032 86083560 87518286 97242540 114778080 116691048 128861280 129656720 131277429 145863810 155588064 172167120 175036572 194485080 218795715 233382096 259313440 262554858 291727620 344334240 350073144 388970160 437591430 466764192 525109716 583455240 656387145 700146288 777940320 875182860 1050219432 1166910480 1312774290 1400292576 1750365720 2100438864 2333820960 2625548580 3500731440 4200877728 5251097160 7001462880 10502194320 21004388640
- Sum of all divisors σ(n): 75808265148
- Sum of proper divisors (its aliquot sum) s(n): 54803876508
- 21004388640 is an abundant number, because the sum of its proper divisors (54803876508) is greater than itself. Its abundance is 33799487868
Bases of 21004388640
- Binary: 100111000111111010110001001001000002
- Hexadecimal: 0x4E3F58920
- Base-36: 9NDGY00
Squares and roots of 21004388640
- 21004388640 squared (210043886402) is 441184342140161049600
- 21004388640 cubed (210043886403) is 9266807384194672037988716544000
-
The
square root of 21004388640 is 144928.9089174413 -
The
cube root of 21004388640 is 2759.1163522803
Scales and comparisons
How big is 21004388640?- 21,004,388,640 seconds is equal to 667 years, 45 weeks, 3 days, 8 hours, 24 minutes.
-
To count from 1 to 21,004,388,640 would take you about one thousand, three hundred thirty-five 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 21004388640 cubic inches would be around 229.9 feet tall.
Recreational maths with 21004388640
- 21004388640 backwards is 04688340012
- 21004388640 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21004388640's digits is 36
- More coming soon!
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