28138533280

Names of 28138533280

• Cardinal: 28138533280 can be written as Twenty-eight billion, one hundred thirty-eight million, five hundred thirty-three thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.813853328 × 10¹⁰

Factors of 28138533280

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1112

Divisors of 28138533280

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 17 20 22 26 32 34 40 44 52 55 65 68 73 80 85 88 104 110 130 136 143 146 160 170 176 187 208 220 221 260 272 286 292 340 352 365 374 416 440 442 520 544 572 584 680 715 730 748 803 880 884 935 949 991 1040 1105 1144 1168 1241 1360 1430 1460 1496 1606 1760 1768 1870 1898 1982 2080 2210 2288 2336 2431 2482 2720 2860 2920 2992 3212 3536 3740 3796 3964 4015 4420 4576 4745 4862 4955 4964 5720 5840 5984 6205 6424 7072 7480 7592 7928 8030 8840 9490 9724 9910 9928 10439 10901 11440 11680 12155 12410 12848 12883 13651 14960 15184 15856 16060 16133 16847 17680 18980 19448 19820 19856 20878 21802 22880 24310 24820 25696 25766 27302 29920 30368 31712 32120 32266 33694 35360 37960 38896 39640 39712 41756 43604 48620 49640 51532 52195 54505 54604 64240 64415 64532 67388 68255 72343 75920 77792 79280 80665 83512 84235 87208 97240 99280 103064 104390 109010 109208 128480 128830 129064 134776 136510 141713 144686 151840 158560 161330 167024 168470 174416 177463 185317 194480 198560 206128 208780 218020 218416 219011 257660 258128 269552 273020 283426 289372 322660 334048 336940 348832 354926 361715 370634 388960 412256 417560 436040 436832 438022 515320 516256 539104 546040 566852 578744 645320 673880 708565 709852 723430 741268 795773 835120 872080 876044 887315 926585 940459 1030640 1092080 1095055 1133704 1157488 1229831 1290640 1347760 1417130 1419704 1446860 1482536 1591546 1670240 1744160 1752088 1774630 1853170 1880918 2061280 2184160 2190110 2267408 2314976 2409121 2459662 2581280 2695520 2834260 2839408 2893720 2965072 3183092 3504176 3549260 3706340 3761836 3978865 4380220 4534816 4702295 4818242 4919324 5668520 5678816 5787440 5930144 6149155 6366184 7008352 7098520 7412680 7523672 7957730 8760440 9404590 9636484 9838648 10345049 11337040 11574880 12045605 12298310 12732368 13528141 14197040 14825360 15047344 15915460 15987803 17520880 18809180 19272968 19677296 20690098 22674080 24091210 24596620 25464736 27056282 28394080 29650720 30094688 31830920 31975606 35041760 37618360 38545936 39354592 41380196 48182420 49193240 51725245 54112564 63661840 63951212 67640705 75236720 77091872 79939015 82760392 96364840 98386480 103450490 108225128 127323680 127902424 135281410 150473440 159878030 165520784 175865833 192729680 196772960 206900980 216450256 255804848 270562820 319756060 331041568 351731666 385459360 413801960 432900512 511609696 541125640 639512120 703463332 827603920 879329165 1082251280 1279024240 1406926664 1655207840 1758658330 2164502560 2558048480 2813853328 3517316660 5627706656 7034633320 14069266640 28138533280
• Sum of all divisors σ(n): 83910629376
• Sum of proper divisors (its aliquot sum) s(n): 55772096096
• 28138533280 is an abundant number, because the sum of its proper divisors (55772096096) is greater than itself. Its abundance is 27633562816

Bases of 28138533280

• Binary: 11010001101001011111111000110100000₂
• Hexadecimal: 0x68D2FF1A0
• Base-36: CXCYF8G

Squares and roots of 28138533280

• 28138533280 squared (28138533280²) is 791777055149667558400
• 28138533280 cubed (28138533280³) is 22279445016669315972974743552000
• The square root of 28138533280 is 167745.4419052869
• The cube root of 28138533280 is 3041.5886952311

Scales and comparisons

• 28,138,533,280 seconds is equal to 894 years, 37 weeks, 2 days, 11 hours, 14 minutes, 40 seconds.
• To count from 1 to 28,138,533,280 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 28138533280 cubic inches would be around 253.5 feet tall.

Recreational maths with 28138533280

• 28138533280 backwards is 08233583182
• The number of decimal digits it has is: 11
• The sum of 28138533280's digits is 43
• More coming soon!