21380265984

Names of 21380265984

• Cardinal: 21380265984 can be written as Twenty-one billion, three hundred eighty million, two hundred sixty-five thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1380265984 × 10¹⁰

Factors of 21380265984

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1117

Divisors of 21380265984

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 42 43 44 48 56 64 66 77 84 86 88 96 112 128 129 132 154 168 172 176 192 224 231 256 258 264 301 308 336 344 352 384 448 462 473 512 516 528 602 616 672 688 704 768 896 903 924 946 1024 1032 1051 1056 1204 1232 1344 1376 1408 1419 1536 1792 1806 1848 1892 2048 2064 2102 2112 2408 2464 2688 2752 2816 2838 3072 3153 3311 3584 3612 3696 3784 4128 4204 4224 4816 4928 5376 5504 5632 5676 6144 6306 6622 7168 7224 7357 7392 7568 8256 8408 8448 9632 9856 9933 10752 11008 11264 11352 11561 12612 13244 14336 14448 14714 14784 15136 16512 16816 16896 19264 19712 19866 21504 22016 22071 22528 22704 23122 25224 26488 28896 29428 29568 30272 33024 33632 33792 34683 38528 39424 39732 43008 44032 44142 45193 45408 46244 50448 52976 57792 58856 59136 60544 66048 67264 67584 69366 77056 78848 79464 80927 88064 88284 90386 90816 92488 100896 105952 115584 117712 118272 121088 132096 134528 135579 138732 154112 157696 158928 161854 176568 180772 181632 184976 201792 211904 231168 235424 236544 242176 242781 264192 269056 271158 277464 308224 316351 317856 323708 353136 361544 363264 369952 403584 423808 462336 470848 473088 484352 485562 497123 538112 542316 554928 616448 632702 635712 647416 706272 723088 726528 739904 807168 847616 924672 941696 949053 968704 971124 994246 1076224 1084632 1109856 1265404 1271424 1294832 1412544 1446176 1453056 1479808 1491369 1614336 1695232 1849344 1883392 1898106 1942248 1988492 2152448 2169264 2219712 2530808 2542848 2589664 2825088 2892352 2906112 2959616 2982738 3228672 3390464 3479861 3766784 3796212 3884496 3976984 4338528 4439424 5061616 5085696 5179328 5650176 5784704 5919232 5965476 6457344 6780928 6959722 7533568 7592424 7768992 7953968 8677056 8878848 10123232 10171392 10358656 10439583 11300352 11569408 11838464 11930952 13919444 15067136 15184848 15537984 15907936 17354112 17757696 20246464 20342784 20717312 20879166 22600704 23138816 23676928 23861904 27838888 30369696 31075968 31815872 34708224 35515392 40492928 41434624 41758332 45201408 46277632 47723808 55677776 60739392 62151936 63631744 69416448 71030784 80985856 82869248 83516664 92555264 95447616 111355552 121478784 124303872 127263488 138832896 161971712 165738496 167033328 190895232 222711104 242957568 248607744 254526976 277665792 323943424 334066656 381790464 445422208 485915136 497215488 509053952 647886848 668133312 763580928 890844416 971830272 1018107904 1336266624 1527161856 1781688832 1943660544 2672533248 3054323712 3563377664 5345066496 7126755328 10690132992 21380265984
• Sum of all divisors σ(n): 72786954240
• Sum of proper divisors (its aliquot sum) s(n): 51406688256
• 21380265984 is an abundant number, because the sum of its proper divisors (51406688256) is greater than itself. Its abundance is 30026422272

Bases of 21380265984

• Binary: 10011111010010111001111100000000000₂
• Hexadecimal: 0x4FA5CF800
• Base-36: 9TL9ATC

Squares and roots of 21380265984

• 21380265984 squared (21380265984²) is 457115773546587488256
• 21380265984 cubed (21380265984³) is 9773256823907951514439756283904
• The square root of 21380265984 is 146219.9233483591
• The cube root of 21380265984 is 2775.4774379237

Scales and comparisons

• 21,380,265,984 seconds is equal to 679 years, 42 weeks, 6 days, 18 hours, 46 minutes, 24 seconds.
• To count from 1 to 21,380,265,984 would take you about one thousand, three hundred fifty-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 21380265984 cubic inches would be around 231.3 feet tall.

Recreational maths with 21380265984

• 21380265984 backwards is 48956208312
• 21380265984 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21380265984's digits is 48
• More coming soon!