28791989380

Names of 28791989380

• Cardinal: 28791989380 can be written as Twenty-eight billion, seven hundred ninety-one million, nine hundred eighty-nine thousand, three hundred eighty.

Scientific notation

• Scientific notation: 2.879198938 × 10¹⁰

Factors of 28791989380

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 336

Divisors of 28791989380

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 29 35 44 49 55 58 59 70 77 98 110 116 118 140 145 154 196 203 220 223 236 245 290 295 308 319 343 385 406 413 446 490 539 580 590 638 649 686 770 812 826 892 980 1015 1078 1115 1180 1276 1298 1372 1421 1540 1561 1595 1652 1711 1715 2030 2065 2156 2230 2233 2453 2596 2695 2842 2891 3122 3190 3245 3422 3430 3773 4060 4130 4460 4466 4543 4906 5390 5684 5782 6244 6380 6467 6490 6844 6860 7105 7546 7805 8260 8555 8932 9086 9812 9947 10780 10927 11165 11564 11977 12265 12934 12980 13157 14210 14455 15092 15610 15631 17110 17171 18172 18821 18865 19894 20237 21854 22330 22715 23954 24530 25868 26314 28420 28910 31220 31262 31801 32335 34220 34342 37642 37730 39788 40474 43708 44660 45269 45430 47908 49060 49735 52628 54635 57820 59885 62524 63602 64670 65785 68684 71137 75284 75460 76489 78155 80948 83839 85855 90538 90860 92099 94105 99470 101185 109270 109417 119770 120197 127204 129340 131570 131747 142274 144727 152978 156310 159005 167678 171710 181076 184198 188210 198940 202370 218540 218834 222607 226345 239540 240394 263140 263494 284548 289454 305956 312620 316883 318010 335356 343420 355685 368396 376420 381553 382445 404740 419195 437668 445214 452690 460495 480788 497959 526988 547085 578908 586873 600985 633766 636020 644693 658735 711370 723635 763106 764890 838390 841379 890428 905380 920990 922229 995918 1013089 1094170 1113035 1173746 1201970 1267532 1289386 1317470 1422740 1447270 1526212 1529780 1584415 1676780 1682758 1841980 1844458 1907765 1991836 2026178 2188340 2218181 2226070 2347492 2403940 2489795 2578772 2634940 2670871 2894540 2934365 3168830 3223465 3365516 3485713 3688916 3815530 4052356 4197083 4206895 4436362 4452140 4512851 4611145 4979590 5065445 5341742 5868730 6337660 6446930 6455603 6971426 7091623 7631060 8394166 8413790 8872724 9025702 9222290 9959180 10130890 10683484 11090905 11737460 12893860 12911206 13354355 13942852 14183246 16788332 16827580 17428565 18051404 18444580 18696097 20261780 20985415 22181810 22564255 24399991 25822412 26708710 28366492 29379581 32278015 34857130 35458115 37392194 41970830 44363620 45128510 48799982 49641361 53417420 58759162 64556030 69714260 70916230 74784388 83941660 90257020 93480485 97599964 99282722 117518324 121999955 129112060 130872679 141832460 146897905 186960970 198565444 205657067 243999910 248206805 261745358 293795810 373921940 411314134 487999820 496413610 523490716 587591620 654363395 822628268 992827220 1028285335 1308726790 1439599469 2056570670 2617453580 2879198938 4113141340 5758397876 7197997345 14395994690 28791989380
• Sum of all divisors σ(n): 81285120000
• Sum of proper divisors (its aliquot sum) s(n): 52493130620
• 28791989380 is an abundant number, because the sum of its proper divisors (52493130620) is greater than itself. Its abundance is 23701141240

Bases of 28791989380

• Binary: 11010110100001000101110010010000100₂
• Hexadecimal: 0x6B422E484
• Base-36: D86096S

Squares and roots of 28791989380

• 28791989380 squared (28791989380²) is 828978652458032784400
• 28791989380 cubed (28791989380³) is 23867944557818390824136629672000
• The square root of 28791989380 is 169682.0243278587
• The cube root of 28791989380 is 3064.9535081437

Scales and comparisons

• 28,791,989,380 seconds is equal to 915 years, 25 weeks, 5 days, 14 hours, 49 minutes, 40 seconds.
• To count from 1 to 28,791,989,380 would take you about one thousand, eight hundred thirty 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 28791989380 cubic inches would be around 255.4 feet tall.

Recreational maths with 28791989380

• 28791989380 backwards is 08398919782
• The number of decimal digits it has is: 11
• The sum of 28791989380's digits is 64
• More coming soon!