21399634368

Names of 21399634368

• Cardinal: 21399634368 can be written as Twenty-one billion, three hundred ninety-nine million, six hundred thirty-four thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1399634368 × 10¹⁰

Factors of 21399634368

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 7620

Divisors of 21399634368

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 72 84 96 98 101 112 126 144 147 168 192 196 202 224 252 288 294 303 336 392 404 441 448 504 576 588 606 672 707 784 808 882 909 1008 1176 1212 1344 1414 1568 1616 1764 1818 2016 2121 2352 2424 2828 3136 3232 3528 3636 4032 4242 4704 4848 4949 5656 6363 6464 7056 7272 7507 8484 9408 9696 9898 11312 12726 14112 14544 14847 15014 16968 19392 19796 22521 22624 25452 28224 29088 29694 30028 33936 39592 44541 45042 45248 50904 52549 58176 59388 60056 67563 67872 79184 89082 90084 101808 105098 118776 120112 135126 135744 157647 158368 178164 180168 203616 210196 237552 240224 270252 315294 316736 356328 360336 367843 407232 420392 472941 475104 480448 540504 630588 712656 720672 735686 758207 840784 945882 950208 1081008 1103529 1261176 1425312 1441344 1471372 1516414 1681568 1891764 2162016 2207058 2274621 2522352 2850624 2942744 3032828 3310587 3363136 3783528 4324032 4414116 4549242 5044704 5307449 5885488 6065656 6621174 6823863 7567056 8828232 9098484 10089408 10614898 11770976 12131312 13242348 13647726 15134112 15922347 17656464 18196968 21229796 23541952 24262624 26484696 27295452 30268224 31844694 35312928 36393936 37152143 42459592 47767041 48525248 52969392 54590904 63689388 70625856 72787872 74304286 84919184 95534082 105938784 109181808 111456429 127378776 145575744 148608572 169838368 191068164 211877568 218363616 222912858 254757552 297217144 334369287 339676736 382136328 436727232 445825716 509515104 594434288 668738574 764272656 891651432 1019030208 1188868576 1337477148 1528545312 1783302864 2377737152 2674954296 3057090624 3566605728 5349908592 7133211456 10699817184 21399634368
• Sum of all divisors σ(n): 72068646312
• Sum of proper divisors (its aliquot sum) s(n): 50669011944
• 21399634368 is an abundant number, because the sum of its proper divisors (50669011944) is greater than itself. Its abundance is 29269377576

Bases of 21399634368

• Binary: 10011111011100001001000000111000000₂
• Hexadecimal: 0x4FB8481C0
• Base-36: 9TWSFK0

Squares and roots of 21399634368

• 21399634368 squared (21399634368²) is 457944351084086759424
• 21399634368 cubed (21399634368³) is 9799841674090481074863578284032
• The square root of 21399634368 is 146286.1386734915
• The cube root of 21399634368 is 2776.3152866877

Scales and comparisons

• 21,399,634,368 seconds is equal to 680 years, 22 weeks, 6 days, 22 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,399,634,368 would take you about one thousand, three hundred sixty 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 21399634368 cubic inches would be around 231.4 feet tall.

Recreational maths with 21399634368

• 21399634368 backwards is 86343699312
• The number of decimal digits it has is: 11
• The sum of 21399634368's digits is 54
• More coming soon!