28381398840

Names of 28381398840

• Cardinal: 28381398840 can be written as Twenty-eight billion, three hundred eighty-one million, three hundred ninety-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.838139884 × 10¹⁰

Factors of 28381398840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 244

Divisors of 28381398840

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 41 45 54 60 72 81 82 90 108 120 123 135 162 164 180 193 205 216 243 246 270 324 328 360 369 386 405 410 486 492 540 579 615 648 729 738 772 810 820 965 972 984 1080 1107 1158 1215 1230 1458 1476 1544 1620 1640 1681 1737 1845 1930 1944 2187 2214 2316 2430 2460 2895 2916 2952 3240 3321 3362 3474 3645 3690 3860 4374 4428 4632 4860 4920 5043 5211 5535 5790 5832 6642 6724 6948 7290 7380 7720 7913 8405 8685 8748 8856 9720 9963 10086 10422 10935 11070 11580 13284 13448 13896 14580 14760 15129 15633 15826 16605 16810 17370 17496 19926 20172 20844 21870 22140 23160 23739 25215 26055 26568 29160 29889 30258 31266 31652 33210 33620 34740 39565 39852 40344 41688 43740 44280 45387 46899 47478 49815 50430 52110 59778 60516 62532 63304 66420 67240 69480 71217 75645 78165 79130 79704 87480 89667 90774 93798 94956 99630 100860 104220 118695 119556 121032 125064 132840 136161 140697 142434 149445 151290 156330 158260 179334 181548 187596 189912 199260 201720 208440 213651 226935 234495 237390 239112 272322 281394 284868 298890 302580 312660 316520 324433 356085 358668 363096 375192 398520 408483 422091 427302 448335 453870 468990 474780 544644 562788 569736 597780 605160 625320 640953 648866 680805 703485 712170 717336 816966 844182 854604 896670 907740 937980 949560 973299 1068255 1089288 1125576 1195560 1225449 1281906 1297732 1361610 1406970 1424340 1622165 1633932 1688364 1709208 1793340 1815480 1875960 1922859 1946598 2042415 2110455 2136510 2450898 2563812 2595464 2723220 2813940 2848680 2919897 3204765 3244330 3267864 3376728 3586680 3676347 3845718 3893196 4084830 4220910 4273020 4866495 4901796 5127624 5446440 5627880 5768577 5839794 6127245 6409530 6488660 7352694 7691436 7786392 8169660 8441820 8546040 8759691 9614295 9732990 9803592 11537154 11679588 12254490 12819060 12977320 14599485 14705388 15382872 16339320 16883640 17305731 17519382 18381735 19228590 19465980 23074308 23359176 24508980 25638120 26279073 28842885 29198970 29410776 34611462 35038764 36763470 38457180 38931960 43798455 46148616 49017960 52558146 57685770 58397940 69222924 70077528 73526940 76914360 78837219 86528655 87596910 105116292 115371540 116795880 131395365 138445848 147053880 157674438 173057310 175193820 210232584 230743080 236511657 262790730 315348876 346114620 350387640 394186095 473023314 525581460 630697752 692229240 709534971 788372190 946046628 1051162920 1182558285 1419069942 1576744380 1892093256 2365116570 2838139884 3153488760 3547674855 4730233140 5676279768 7095349710 9460466280 14190699420 28381398840
• Sum of all divisors σ(n): 98674142400
• Sum of proper divisors (its aliquot sum) s(n): 70292743560
• 28381398840 is an abundant number, because the sum of its proper divisors (70292743560) is greater than itself. Its abundance is 41911344720

Bases of 28381398840

• Binary: 11010011011101010011100011100111000₂
• Hexadecimal: 0x69BA9C738
• Base-36: D1DJVI0

Squares and roots of 28381398840

• 28381398840 squared (28381398840²) is 805503800115153345600
• 28381398840 cubed (28381398840³) is 22861324618203805029233959104000
• The square root of 28381398840 is 168467.7976350377
• The cube root of 28381398840 is 3050.3143576371

Scales and comparisons

• 28,381,398,840 seconds is equal to 902 years, 22 weeks, 6 days, 9 hours, 54 minutes.
• To count from 1 to 28,381,398,840 would take you about one thousand, eight hundred four 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 28381398840 cubic inches would be around 254.2 feet tall.

Recreational maths with 28381398840

• 28381398840 backwards is 04889318382
• 28381398840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28381398840's digits is 54
• More coming soon!