28121318784

Names of 28121318784

• Cardinal: 28121318784 can be written as Twenty-eight billion, one hundred twenty-one million, three hundred eighteen thousand, seven hundred eighty-four.

Scientific notation

• Scientific notation: 2.8121318784 × 10¹⁰

Factors of 28121318784

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 330

Divisors of 28121318784

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 41 48 52 64 72 78 82 96 104 117 123 128 144 156 164 169 192 208 234 246 271 288 312 328 338 369 384 416 468 492 507 533 542 576 624 656 676 738 813 832 936 984 1014 1066 1084 1152 1248 1312 1352 1476 1521 1599 1626 1664 1872 1968 2028 2132 2168 2197 2439 2496 2624 2704 2952 3042 3198 3252 3523 3744 3936 4056 4264 4336 4394 4797 4878 4992 5248 5408 5904 6084 6396 6504 6591 6929 7046 7488 7872 8112 8528 8672 8788 9594 9756 10569 10816 11111 11808 12168 12792 13008 13182 13858 14092 14976 15744 16224 17056 17344 17576 19188 19512 19773 20787 21138 21632 22222 23616 24336 25584 26016 26364 27716 28184 31707 32448 33333 34112 34688 35152 38376 39024 39546 41574 42276 44444 45799 47232 48672 51168 52032 52728 55432 56368 62361 63414 64896 66666 68224 70304 76752 78048 79092 83148 84552 88888 90077 91598 97344 99999 102336 104064 105456 110864 112736 124722 126828 133332 137397 140608 144443 153504 156096 158184 166296 169104 177776 180154 183196 194688 199998 204672 210912 221728 225472 249444 253656 266664 270231 274794 281216 288886 307008 312192 316368 332592 338208 355552 360308 366392 399996 412191 421824 433329 443456 450944 498888 507312 533328 540462 549588 577772 595387 614016 632736 665184 676416 711104 720616 732784 799992 810693 824382 843648 866658 886912 997776 1014624 1066656 1080924 1099176 1155544 1190774 1265472 1299987 1330368 1352832 1422208 1441232 1465568 1599984 1621386 1648764 1733316 1786161 1877759 1995552 2029248 2133312 2161848 2198352 2311088 2381548 2530944 2599974 2660736 2882464 2931136 3199968 3242772 3297528 3466632 3572322 3755518 3991104 4058496 4266624 4323696 4396704 4622176 4763096 5199948 5358483 5633277 5764928 5862272 6399936 6485544 6595056 6933264 7144644 7511036 7982208 8647392 8793408 9244352 9526192 10399896 10716966 11266554 11529856 12799872 12971088 13190112 13866528 14289288 15022072 16899831 17294784 17586816 18488704 19052384 20799792 21433932 22533108 24410867 25942176 26380224 27733056 28578576 30044144 33799662 34589568 38104768 41599584 42867864 45066216 48821734 51884352 52760448 55466112 57157152 60088288 67599324 73232601 76209536 83199168 85735728 90132432 97643468 103768704 114314304 120176576 135198648 146465202 166398336 171471456 180264864 195286936 219697803 228628608 240353152 270397296 292930404 342942912 360529728 390573872 439395606 540794592 585860808 685885824 721059456 781147744 878791212 1081589184 1171721616 1562295488 1757582424 2163178368 2343443232 3124590976 3515164848 4686886464 7030329696 9373772928 14060659392 28121318784
• Sum of all divisors σ(n): 90131932800
• Sum of proper divisors (its aliquot sum) s(n): 62010614016
• 28121318784 is an abundant number, because the sum of its proper divisors (62010614016) is greater than itself. Its abundance is 33889295232

Bases of 28121318784

• Binary: 11010001100001010010100010110000000₂
• Hexadecimal: 0x68C294580
• Base-36: CX2PGG0

Squares and roots of 28121318784

• 28121318784 squared (28121318784²) is 790808570151351238656
• 28121318784 cubed (28121318784³) is 22238579898345375310598639714304
• The square root of 28121318784 is 167694.1226877079
• The cube root of 28121318784 is 3040.9683111127

Scales and comparisons

• 28,121,318,784 seconds is equal to 894 years, 8 weeks, 6 days, 5 hours, 26 minutes, 24 seconds.
• To count from 1 to 28,121,318,784 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 28121318784 cubic inches would be around 253.4 feet tall.

Recreational maths with 28121318784

• 28121318784 backwards is 48781312182
• The number of decimal digits it has is: 11
• The sum of 28121318784's digits is 45
• More coming soon!