20129457920

Names of 20129457920

• Cardinal: 20129457920 can be written as Twenty billion, one hundred twenty-nine million, four hundred fifty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.012945792 × 10¹⁰

Factors of 20129457920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 6517

Divisors of 20129457920

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 17 20 22 26 32 34 40 44 52 55 64 65 68 80 85 88 104 110 128 130 136 143 160 170 176 187 208 220 221 256 260 272 286 320 340 352 374 416 440 442 520 544 572 640 680 704 715 748 832 880 884 935 1040 1088 1105 1144 1280 1360 1408 1430 1496 1664 1760 1768 1870 2080 2176 2210 2288 2431 2720 2816 2860 2992 3328 3520 3536 3740 4160 4352 4420 4576 4862 5440 5720 5984 6469 7040 7072 7480 8320 8840 9152 9724 10880 11440 11968 12155 12938 14080 14144 14960 16640 17680 18304 19448 21760 22880 23936 24310 25876 28288 29920 32345 35360 36608 38896 45760 47872 48620 51752 56576 59840 64690 70720 71159 77792 84097 91520 97240 103504 109973 119680 129380 141440 142318 155584 168194 183040 194480 207008 219946 239360 258760 282880 284636 311168 336388 355795 388960 414016 420485 439892 517520 549865 569272 622336 672776 711590 777920 828032 840970 879784 925067 1035040 1099730 1138544 1209703 1345552 1423180 1429649 1555840 1656064 1681940 1759568 1850134 2070080 2199460 2277088 2419406 2691104 2846360 2859298 3111680 3363880 3519136 3700268 4140160 4398920 4554176 4625335 4838812 5382208 5692720 5718596 6048515 6727760 7038272 7148245 7400536 8280320 8797840 9108352 9250670 9677624 10764416 11385440 11437192 12097030 13455520 14076544 14296490 14801072 15726139 17595680 18216704 18501340 19355248 21528832 22770880 22874384 24194060 26911040 28153088 28592980 29602144 31452278 35191360 37002680 38710496 45541760 45748768 48388120 53822080 57185960 59204288 62904556 70382720 74005360 77420992 78630695 91083520 91497536 96776240 107644160 114371920 118408576 125809112 140765440 148010720 154841984 157261390 182995072 193552480 228743840 236817152 251618224 296021440 309683968 314522780 365990144 387104960 457487680 503236448 592042880 629045560 774209920 914975360 1006472896 1184085760 1258091120 1548419840 1829950720 2012945792 2516182240 4025891584 5032364480 10064728960 20129457920
• Sum of all divisors σ(n): 59987148480
• Sum of proper divisors (its aliquot sum) s(n): 39857690560
• 20129457920 is an abundant number, because the sum of its proper divisors (39857690560) is greater than itself. Its abundance is 19728232640

Bases of 20129457920

• Binary: 10010101111110011110010011100000000₂
• Hexadecimal: 0x4AFCF2700
• Base-36: 98WK54W

Squares and roots of 20129457920

• 20129457920 squared (20129457920²) is 405195076153050726400
• 20129457920 cubed (20129457920³) is 8156357234814030076694233088000
• The square root of 20129457920 is 141878.3208245715
• The cube root of 20129457920 is 2720.2617395185

Scales and comparisons

• 20,129,457,920 seconds is equal to 640 years, 2 weeks, 5 days, 20 hours, 5 minutes, 20 seconds.
• To count from 1 to 20,129,457,920 would take you about one thousand, two hundred eighty 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 20129457920 cubic inches would be around 226.7 feet tall.

Recreational maths with 20129457920

• 20129457920 backwards is 02975492102
• The number of decimal digits it has is: 11
• The sum of 20129457920's digits is 41
• More coming soon!