21478467920
21,478,467,920 is an even composite number composed of six prime numbers multiplied together.
21478467920 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 21478467920:
24 × 5 × 73 × 13 × 19 × 3169
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 13 × 19 × 3169)See below for interesting mathematical facts about the number 21478467920 from the Numbermatics database.
Names of 21478467920
- Cardinal: 21478467920 can be written as Twenty-one billion, four hundred seventy-eight million, four hundred sixty-seven thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.147846792 × 1010
Factors of 21478467920
Divisors of 21478467920
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 19 20 26 28 35 38 40 49 52 56 65 70 76 80 91 95 98 104 112 130 133 140 152 182 190 196 208 245 247 260 266 280 304 343 364 380 392 455 490 494 520 532 560 637 665 686 728 760 784 910 931 980 988 1040 1064 1235 1274 1330 1372 1456 1520 1715 1729 1820 1862 1960 1976 2128 2470 2548 2660 2744 3169 3185 3430 3458 3640 3724 3920 3952 4459 4655 4940 5096 5320 5488 6338 6370 6517 6860 6916 7280 7448 8645 8918 9310 9880 10192 10640 12103 12676 12740 13034 13720 13832 14896 15845 17290 17836 18620 19760 22183 22295 24206 25352 25480 26068 27440 27664 31690 32585 34580 35672 37240 41197 44366 44590 48412 50704 50960 52136 60211 60515 63380 65170 69160 71344 74480 82394 84721 88732 89180 96824 104272 110915 120422 121030 126760 130340 138320 155281 164788 169442 177464 178360 193648 205985 221830 240844 242060 253520 260680 288379 301055 310562 329576 338884 354928 356720 411970 421477 423605 443660 481688 484120 521360 576758 602110 621124 659152 677768 776405 782743 823940 842954 847210 887320 963376 968240 1086967 1153516 1204220 1242248 1355536 1441895 1552810 1565486 1647880 1685908 1694420 1774640 2018653 2107385 2173934 2307032 2408440 2484496 2883790 2950339 3105620 3130972 3295760 3371816 3388840 3913715 4037306 4214770 4347868 4614064 4816880 5434835 5479201 5767580 5900678 6211240 6261944 6743632 6777680 7827430 8074612 8429540 8695736 10093265 10869670 10958402 11535160 11801356 12422480 12523888 14130571 14751695 15654860 16149224 16859080 17391472 20186530 20652373 21739340 21916804 23070320 23602712 27396005 28261142 29503390 31309720 32298448 33718160 38354407 40373060 41304746 43478680 43833608 47205424 54792010 56522284 59006780 62619440 70652855 76708814 80746120 82609492 86957360 87667216 103261865 109584020 113044568 118013560 141305710 153417628 161492240 165218984 191772035 206523730 219168040 226089136 236027120 268480849 282611420 306835256 330437968 383544070 413047460 438336080 536961698 565222840 613670512 767088140 826094920 1073923396 1130445680 1342404245 1534176280 1652189840 2147846792 2684808490 3068352560 4295693584 5369616980 10739233960 21478467920
- Sum of all divisors σ(n): 66037440000
- Sum of proper divisors (its aliquot sum) s(n): 44558972080
- 21478467920 is an abundant number, because the sum of its proper divisors (44558972080) is greater than itself. Its abundance is 23080504160
Bases of 21478467920
- Binary: 101000000000011011101101001010100002
- Hexadecimal: 0x500376950
- Base-36: 9V7Q3WW
Squares and roots of 21478467920
- 21478467920 squared (214784679202) is 461324584190469126400
- 21478467920 cubed (214784679203) is 9908545282242330301132825088000
-
The
square root of 21478467920 is 146555.3408102209 -
The
cube root of 21478467920 is 2779.7203072477
Scales and comparisons
How big is 21478467920?- 21,478,467,920 seconds is equal to 682 years, 49 weeks, 2 days, 9 hours, 5 minutes, 20 seconds.
-
To count from 1 to 21,478,467,920 would take you about one thousand, three hundred sixty-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 21478467920 cubic inches would be around 231.6 feet tall.
Recreational maths with 21478467920
- 21478467920 backwards is 02976487412
- The number of decimal digits it has is: 11
- The sum of 21478467920's digits is 50
- More coming soon!
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