18728091648

Names of 18728091648

• Cardinal: 18728091648 can be written as Eighteen billion, seven hundred twenty-eight million, ninety-one thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 1.8728091648 × 10¹⁰

Factors of 18728091648

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 27
• Sum of prime factors: 12

Divisors of 18728091648

• Number of divisors d(n): 420
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 64 72 81 84 96 98 108 112 126 128 144 147 162 168 189 192 196 216 224 243 252 256 288 294 324 336 378 384 392 432 441 448 486 504 512 567 576 588 648 672 729 756 768 784 864 882 896 972 1008 1024 1134 1152 1176 1296 1323 1344 1458 1512 1536 1568 1701 1728 1764 1792 1944 2016 2048 2268 2304 2352 2592 2646 2688 2916 3024 3072 3136 3402 3456 3528 3584 3888 3969 4032 4096 4536 4608 4704 5103 5184 5292 5376 5832 6048 6144 6272 6804 6912 7056 7168 7776 7938 8064 8192 9072 9216 9408 10206 10368 10584 10752 11664 11907 12096 12288 12544 13608 13824 14112 14336 15552 15876 16128 16384 18144 18432 18816 20412 20736 21168 21504 23328 23814 24192 24576 25088 27216 27648 28224 28672 31104 31752 32256 32768 35721 36288 36864 37632 40824 41472 42336 43008 46656 47628 48384 49152 50176 54432 55296 56448 57344 62208 63504 64512 65536 71442 72576 73728 75264 81648 82944 84672 86016 93312 95256 96768 98304 100352 108864 110592 112896 114688 124416 127008 129024 131072 142884 145152 147456 150528 163296 165888 169344 172032 186624 190512 193536 196608 200704 217728 221184 225792 229376 248832 254016 258048 262144 285768 290304 294912 301056 326592 331776 338688 344064 373248 381024 387072 393216 401408 435456 442368 451584 458752 497664 508032 516096 524288 571536 580608 589824 602112 653184 663552 677376 688128 746496 762048 774144 786432 802816 870912 884736 903168 917504 995328 1016064 1032192 1143072 1161216 1179648 1204224 1306368 1327104 1354752 1376256 1492992 1524096 1548288 1572864 1605632 1741824 1769472 1806336 1835008 1990656 2032128 2064384 2286144 2322432 2359296 2408448 2612736 2654208 2709504 2752512 2985984 3048192 3096576 3211264 3483648 3538944 3612672 3670016 3981312 4064256 4128768 4572288 4644864 4718592 4816896 5225472 5308416 5419008 5505024 5971968 6096384 6193152 6422528 6967296 7077888 7225344 7962624 8128512 8257536 9144576 9289728 9633792 10450944 10616832 10838016 11010048 11943936 12192768 12386304 12845056 13934592 14155776 14450688 15925248 16257024 16515072 18289152 18579456 19267584 20901888 21233664 21676032 23887872 24385536 24772608 25690112 27869184 28901376 31850496 32514048 33030144 36578304 37158912 38535168 41803776 42467328 43352064 47775744 48771072 49545216 55738368 57802752 63700992 65028096 73156608 74317824 77070336 83607552 86704128 95551488 97542144 99090432 111476736 115605504 127401984 130056192 146313216 148635648 167215104 173408256 191102976 195084288 222953472 231211008 260112384 292626432 297271296 334430208 346816512 382205952 390168576 445906944 520224768 585252864 668860416 693633024 780337152 891813888 1040449536 1170505728 1337720832 1560674304 2080899072 2341011456 2675441664 3121348608 4682022912 6242697216 9364045824 18728091648
• Sum of all divisors σ(n): 65327271075
• Sum of proper divisors (its aliquot sum) s(n): 46599179427
• 18728091648 is an abundant number, because the sum of its proper divisors (46599179427) is greater than itself. Its abundance is 27871087779

Bases of 18728091648

• Binary: 10001011100010010000000000000000000₂
• Hexadecimal: 0x45C480000
• Base-36: 8LQ8000

Squares and roots of 18728091648

• 18728091648 squared (18728091648²) is 350741416775887355904
• 18728091648 cubed (18728091648³) is 6568717398128183077894505889792
• The square root of 18728091648 is 136850.6180037197
• The cube root of 18728091648 is 2655.6113042257

Scales and comparisons

• 18,728,091,648 seconds is equal to 595 years, 25 weeks, 5 days, 7 hours, 40 minutes, 48 seconds.
• To count from 1 to 18,728,091,648 would take you about one thousand, one hundred ninety 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 18728091648 cubic inches would be around 221.3 feet tall.

Recreational maths with 18728091648

• 18728091648 backwards is 84619082781
• 18728091648 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18728091648's digits is 54
• More coming soon!