28138928640
28,138,928,640 is an even composite number composed of six prime numbers multiplied together.
28138928640 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 28138928640:
29 × 3 × 5 × 23 × 241 × 661
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 23 × 241 × 661)See below for interesting mathematical facts about the number 28138928640 from the Numbermatics database.
Names of 28138928640
- Cardinal: 28138928640 can be written as Twenty-eight billion, one hundred thirty-eight million, nine hundred twenty-eight thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.813892864 × 1010
Factors of 28138928640
Divisors of 28138928640
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 64 69 80 92 96 115 120 128 138 160 184 192 230 240 241 256 276 320 345 368 384 460 480 482 512 552 640 661 690 723 736 768 920 960 964 1104 1205 1280 1322 1380 1446 1472 1536 1840 1920 1928 1983 2208 2410 2560 2644 2760 2892 2944 3305 3615 3680 3840 3856 3966 4416 4820 5288 5520 5543 5784 5888 6610 7230 7360 7680 7712 7932 8832 9640 9915 10576 11040 11086 11568 11776 13220 14460 14720 15203 15424 15864 16629 17664 19280 19830 21152 22080 22172 23136 26440 27715 28920 29440 30406 30848 31728 33258 35328 38560 39660 42304 44160 44344 45609 46272 52880 55430 57840 58880 60812 61696 63456 66516 76015 77120 79320 83145 84608 88320 88688 91218 92544 105760 110860 115680 121624 123392 126912 133032 152030 154240 158640 159301 166290 169216 176640 177376 182436 185088 211520 221720 228045 231360 243248 253824 266064 304060 308480 317280 318602 332580 338432 354752 364872 370176 423040 443440 456090 462720 477903 486496 507648 532128 608120 616960 634560 637204 665160 709504 729744 796505 846080 886880 912180 925440 955806 972992 1015296 1064256 1216240 1269120 1274408 1330320 1419008 1459488 1593010 1692160 1773760 1824360 1850880 1911612 1945984 2128512 2389515 2432480 2538240 2548816 2660640 2838016 2918976 3186020 3547520 3648720 3663923 3823224 3891968 4257024 4779030 4864960 5076480 5097632 5321280 5837952 6372040 7095040 7297440 7327846 7646448 7783936 8514048 9558060 9729920 10195264 10642560 10991769 11675904 12744080 14190080 14594880 14655692 15292896 18319615 19116120 19459840 20390528 21285120 21983538 23351808 25488160 29189760 29311384 30585792 36639230 38232240 38919680 40781056 42570240 43967076 50976320 54958845 58379520 58622768 61171584 73278460 76464480 81562112 87934152 101952640 109917690 116759040 117245536 122343168 146556920 152928960 175868304 203905280 219835380 234491072 244686336 293113840 305857920 351736608 407810560 439670760 468982144 586227680 611715840 703473216 879341520 937964288 1172455360 1223431680 1406946432 1758683040 1875928576 2344910720 2813892864 3517366080 4689821440 5627785728 7034732160 9379642880 14069464320 28138928640
- Sum of all divisors σ(n): 94399886592
- Sum of proper divisors (its aliquot sum) s(n): 66260957952
- 28138928640 is an abundant number, because the sum of its proper divisors (66260957952) is greater than itself. Its abundance is 38122029312
Bases of 28138928640
- Binary: 110100011010011010111111010000000002
- Hexadecimal: 0x68D35FA00
- Base-36: CXD6WAO
Squares and roots of 28138928640
- 28138928640 squared (281389286402) is 791799305007012249600
- 28138928640 cubed (281389286403) is 22280384140793912391100268544000
-
The
square root of 28138928640 is 167746.6203534367 -
The
cube root of 28138928640 is 3041.6029404283
Scales and comparisons
How big is 28138928640?- 28,138,928,640 seconds is equal to 894 years, 38 weeks, 1 hour, 4 minutes.
-
To count from 1 to 28,138,928,640 would take you about one thousand, seven hundred eighty-nine 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 28138928640 cubic inches would be around 253.5 feet tall.
Recreational maths with 28138928640
- 28138928640 backwards is 04682983182
- The number of decimal digits it has is: 11
- The sum of 28138928640's digits is 51
- More coming soon!
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