28131285420

Names of 28131285420

• Cardinal: 28131285420 can be written as Twenty-eight billion, one hundred thirty-one million, two hundred eighty-five thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.813128542 × 10¹⁰

Factors of 28131285420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1952

Divisors of 28131285420

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 31 35 36 42 43 45 54 60 62 63 70 81 84 86 90 93 105 108 124 126 129 135 140 155 162 172 180 186 189 210 215 217 252 258 270 279 301 310 315 324 372 378 387 405 420 430 434 465 516 540 558 567 602 620 630 645 651 756 774 810 837 860 868 903 930 945 1085 1116 1134 1161 1204 1260 1290 1302 1333 1395 1505 1548 1620 1674 1806 1860 1861 1890 1935 1953 2170 2268 2322 2511 2580 2604 2666 2709 2790 2835 3010 3255 3348 3483 3612 3722 3780 3870 3906 3999 4185 4340 4515 4644 5022 5332 5418 5580 5583 5670 5805 5859 6020 6510 6665 6966 7444 7740 7812 7998 8127 8370 9030 9305 9331 9765 10044 10836 11166 11340 11610 11718 11997 12555 13020 13027 13330 13545 13932 15996 16254 16740 16749 17415 17577 18060 18610 18662 19530 19995 22332 23220 23436 23994 24381 25110 26054 26660 27090 27915 27993 29295 32508 33498 34830 35154 35991 37220 37324 39060 39081 39990 40635 46655 47988 48762 50220 50247 52108 54180 55830 55986 57691 58590 59985 65135 66996 69660 70308 71982 78162 79980 80023 81270 83745 83979 87885 93310 97524 100494 107973 111660 111972 115382 117180 117243 119970 121905 130270 139965 143964 150741 156324 160046 162540 167490 167958 173073 175770 179955 186620 195405 200988 215946 230764 234486 239940 240069 243810 251235 251937 260540 279930 288455 301482 320092 334980 335916 346146 351540 351729 359910 390810 400115 403837 419895 431892 468972 480138 487620 502470 503874 519219 539865 559860 560161 576910 586215 602964 692292 703458 719820 720207 753705 755811 781620 800230 807674 839790 865365 960276 1004940 1007748 1038438 1055187 1079730 1120322 1153820 1172430 1200345 1211511 1259685 1406916 1440414 1507410 1511622 1557657 1600460 1615348 1679580 1680483 1730730 1758645 2019185 2076876 2110374 2159460 2160621 2240644 2344860 2400690 2423022 2480713 2519370 2596095 2800805 2880828 3014820 3023244 3115314 3360966 3461460 3517290 3601035 3634533 3779055 4038370 4220748 4321242 4672971 4801380 4846044 4961426 5038740 5041449 5192190 5275935 5601610 6057555 6230628 6481863 6721932 7034580 7202070 7269066 7442139 7558110 7788285 8076740 8402415 8642484 9345942 9922852 10082898 10384380 10551870 10803105 10903599 11203220 12115110 12403565 12963726 14404140 14538132 14884278 15116220 15124347 15576570 16804830 17364991 18172665 18691884 20165796 21103740 21606210 21807198 22326417 23364855 24230220 24807130 25207245 25927452 29768556 30248694 31153140 32409315 32710797 33609660 34729982 36345330 37210695 43212420 43614396 44652834 45373041 46729710 49614260 50414490 52094973 54517995 60497388 64818630 65421594 66979251 69459964 72690660 74421390 75621735 86824955 89305668 90746082 93459420 100828980 104189946 109035990 111632085 129637260 130843188 133958502 148842780 151243470 156284919 163553985 173649910 181492164 200937753 208379892 218071980 223264170 226865205 260474865 267917004 302486940 312569838 327107970 334896255 347299820 401875506 446528340 453730410 468854757 520949730 625139676 654215940 669792510 781424595 803751012 907460820 937709514 1004688765 1041899460 1339585020 1406564271 1562849190 1875419028 2009377530 2344273785 2813128542 3125698380 4018755060 4688547570 5626257084 7032821355 9377095140 14065642710 28131285420
• Sum of all divisors σ(n): 106587672576
• Sum of proper divisors (its aliquot sum) s(n): 78456387156
• 28131285420 is an abundant number, because the sum of its proper divisors (78456387156) is greater than itself. Its abundance is 50325101736

Bases of 28131285420

• Binary: 11010001100110000010101100110101100₂
• Hexadecimal: 0x68CC159AC
• Base-36: CX8N2R0

Squares and roots of 28131285420

• 28131285420 squared (28131285420²) is 791369219381504576400
• 28131285420 cubed (28131285420³) is 22262233383023701107744596088000
• The square root of 28131285420 is 167723.8367674673
• The cube root of 28131285420 is 3041.3275242849

Scales and comparisons

• 28,131,285,420 seconds is equal to 894 years, 25 weeks, 2 days, 13 hours, 57 minutes.
• To count from 1 to 28,131,285,420 would take you about one thousand, seven hundred eighty-eight 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 28131285420 cubic inches would be around 253.4 feet tall.

Recreational maths with 28131285420

• 28131285420 backwards is 02458213182
• 28131285420 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28131285420's digits is 36
• More coming soon!