28021328440

Names of 28021328440

• Cardinal: 28021328440 can be written as Twenty-eight billion, twenty-one million, three hundred twenty-eight thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.802132844 × 10¹⁰

Factors of 28021328440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1266

Divisors of 28021328440

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 7 8 10 14 19 20 28 35 38 40 56 61 70 76 79 95 122 133 140 152 158 190 244 266 280 305 316 380 395 427 488 532 553 610 632 665 760 790 854 1064 1093 1106 1159 1220 1330 1501 1580 1708 2135 2186 2212 2318 2440 2660 2765 3002 3160 3416 4270 4372 4424 4636 4819 5320 5465 5530 5795 6004 7505 7651 8113 8540 8744 9272 9638 10507 10930 11060 11590 12008 15010 15302 16226 17080 19276 20767 21014 21860 22120 23180 24095 30020 30604 32452 33733 38255 38552 40565 41534 42028 43720 46360 48190 52535 60040 61208 64904 66673 67466 76510 81130 83068 84056 86347 91561 96380 103835 105070 133346 134932 145369 153020 162260 166136 168665 172694 183122 192760 207670 210140 266692 269864 290738 306040 324520 333365 337330 345388 366244 415340 420280 431735 457805 466711 533384 581476 604429 640927 666730 674660 690776 726845 732488 830680 863470 915610 933422 1162952 1208858 1266787 1281854 1333460 1349320 1453690 1640593 1726940 1831220 1866844 2333555 2417716 2533574 2563708 2666920 2907380 3022145 3204635 3281186 3453880 3662440 3733688 4667110 4835432 5067148 5127416 5267167 5814760 6044290 6333935 6409270 6562372 8202965 8867509 9334220 10134296 10534334 11484151 12088580 12667870 12818540 13124744 16405930 17735018 18668440 21068668 22968302 24177160 25335740 25637080 26335835 32811860 35470036 36870169 42137336 44337545 45936604 50671480 52671670 57420755 65623720 70940072 73740338 88675090 91873208 100076173 105343340 114841510 147480676 177350180 184350845 200152346 210686680 229683020 294961352 354700360 368701690 400304692 459366040 500380865 700533211 737403380 800609384 1000761730 1401066422 1474806760 2001523460 2802132844 3502666055 4003046920 5604265688 7005332110 14010664220 28021328440
• Sum of all divisors σ(n): 78137856000
• Sum of proper divisors (its aliquot sum) s(n): 50116527560
• 28021328440 is an abundant number, because the sum of its proper divisors (50116527560) is greater than itself. Its abundance is 22095199120

Bases of 28021328440

• Binary: 11010000110001100111000101000111000₂
• Hexadecimal: 0x686338A38
• Base-36: CVF6BEG

Squares and roots of 28021328440

• 28021328440 squared (28021328440²) is 785194847542352833600
• 28021328440 cubed (28021328440³) is 22002202712379995560670267584000
• The square root of 28021328440 is 167395.7240792009
• The cube root of 28021328440 is 3037.3597964945

Scales and comparisons

• 28,021,328,440 seconds is equal to 890 years, 51 weeks, 3 days, 22 hours, 20 minutes, 40 seconds.
• To count from 1 to 28,021,328,440 would take you about one thousand, seven hundred eighty-one 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 28021328440 cubic inches would be around 253.1 feet tall.

Recreational maths with 28021328440

• 28021328440 backwards is 04482312082
• The number of decimal digits it has is: 11
• The sum of 28021328440's digits is 34
• More coming soon!