20521297920

Names of 20521297920

• Cardinal: 20521297920 can be written as Twenty billion, five hundred twenty-one million, two hundred ninety-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.052129792 × 10¹⁰

Factors of 20521297920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 351

Divisors of 20521297920

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 47 48 60 61 64 80 94 96 120 122 128 141 160 183 188 192 233 235 240 244 256 282 305 320 366 376 384 466 470 480 488 512 564 610 640 699 705 732 752 768 915 932 940 960 976 1024 1128 1165 1220 1280 1398 1410 1464 1504 1536 1830 1864 1880 1920 1952 2048 2256 2330 2440 2560 2796 2820 2867 2928 3008 3072 3495 3660 3728 3760 3840 3904 4512 4660 4880 5120 5592 5640 5734 5856 6016 6144 6990 7320 7456 7520 7680 7808 8601 9024 9320 9760 10240 10951 11184 11280 11468 11712 12032 13980 14213 14335 14640 14912 15040 15360 15616 17202 18048 18640 19520 21902 22368 22560 22936 23424 24064 27960 28426 28670 29280 29824 30080 30720 31232 32853 34404 36096 37280 39040 42639 43005 43804 44736 45120 45872 46848 48128 54755 55920 56852 57340 58560 59648 60160 62464 65706 68808 71065 72192 74560 78080 85278 86010 87608 89472 90240 91744 93696 96256 109510 111840 113704 114680 117120 119296 120320 124928 131412 137616 142130 144384 149120 156160 164265 170556 172020 175216 178944 180480 183488 187392 213195 219020 223680 227408 229360 234240 238592 240640 262824 275232 284260 288768 298240 312320 328530 341112 344040 350432 357888 360960 366976 374784 426390 438040 447360 454816 458720 468480 477184 481280 525648 550464 568520 596480 624640 657060 668011 682224 688080 700864 715776 721920 733952 852780 876080 894720 909632 917440 936960 1051296 1100928 1137040 1192960 1314120 1336022 1364448 1376160 1401728 1431552 1443840 1467904 1705560 1752160 1789440 1819264 1834880 1873920 2004033 2102592 2201856 2274080 2385920 2628240 2672044 2728896 2752320 2803456 2935808 3340055 3411120 3504320 3578880 3638528 3669760 4008066 4205184 4403712 4548160 5256480 5344088 5457792 5504640 5606912 5871616 6680110 6822240 7008640 7157760 7277056 7339520 8016132 8410368 8807424 9096320 10020165 10512960 10688176 10915584 11009280 11213824 13360220 13644480 14017280 14554112 14679040 16032264 16820736 17614848 18192640 20040330 21025920 21376352 21831168 22018560 22427648 26720440 27288960 28034560 29108224 29358080 32064528 33641472 36385280 40080660 42051840 42752704 43662336 44037120 53440880 54577920 56069120 64129056 67282944 72770560 80161320 84103680 85505408 87324672 88074240 106881760 109155840 112138240 128258112 145541120 160322640 168207360 171010816 213763520 218311680 256516224 320645280 336414720 342021632 427527040 436623360 513032448 641290560 684043264 855054080 1026064896 1282581120 1368086528 1710108160 2052129792 2565162240 3420216320 4104259584 5130324480 6840432640 10260648960 20521297920
• Sum of all divisors σ(n): 68440619520
• Sum of proper divisors (its aliquot sum) s(n): 47919321600
• 20521297920 is an abundant number, because the sum of its proper divisors (47919321600) is greater than itself. Its abundance is 27398023680

Bases of 20521297920

• Binary: 10011000111001010100010100000000000₂
• Hexadecimal: 0x4C72A2800
• Base-36: 9FDUMTC

Squares and roots of 20521297920

• 20521297920 squared (20521297920²) is 421123668321396326400
• 20521297920 cubed (20521297920³) is 8642004258786640324447961088000
• The square root of 20521297920 is 143252.5668879971
• The cube root of 20521297920 is 2737.7993020677

Scales and comparisons

• 20,521,297,920 seconds is equal to 652 years, 26 weeks, 5 days, 32 minutes.
• To count from 1 to 20,521,297,920 would take you about one thousand, three hundred five 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 20521297920 cubic inches would be around 228.1 feet tall.

Recreational maths with 20521297920

• 20521297920 backwards is 02979212502
• The number of decimal digits it has is: 11
• The sum of 20521297920's digits is 39
• More coming soon!