20979917280

Names of 20979917280

• Cardinal: 20979917280 can be written as Twenty billion, nine hundred seventy-nine million, nine hundred seventeen thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.097991728 × 10¹⁰

Factors of 20979917280

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 10675

Divisors of 20979917280

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 70 72 80 84 90 96 105 112 120 126 140 144 160 168 180 199 210 224 240 252 280 288 315 336 360 398 420 480 504 560 597 630 672 720 796 840 995 1008 1120 1194 1260 1393 1440 1592 1680 1791 1990 2016 2388 2520 2786 2985 3184 3360 3582 3980 4179 4776 5040 5572 5970 6368 6965 7164 7960 8358 8955 9552 10080 10459 11144 11940 12537 13930 14328 15920 16716 17910 19104 20895 20918 22288 23880 25074 27860 28656 31377 31840 33432 35820 41790 41836 44576 47760 50148 52295 55720 57312 62685 62754 66864 71640 73213 83580 83672 94131 95520 100296 104590 111440 125370 125508 133728 143280 146426 156885 167160 167344 188262 200592 209180 219639 222880 250740 251016 286560 292852 313770 334320 334688 366065 376524 401184 418360 439278 470655 501480 502032 585704 627540 658917 668640 732130 753048 836720 878556 941310 1002960 1004064 1098195 1171408 1255080 1317834 1464260 1506096 1673440 1757112 1882620 2005920 2081341 2196390 2342816 2510160 2635668 2928520 3012192 3294585 3514224 3765240 4162682 4392780 5020320 5271336 5857040 6244023 6589170 7028448 7530480 8325364 8785560 10406705 10542672 11714080 12488046 13178340 14569387 15060960 16650728 17571120 18732069 20813410 21085344 24976092 26356680 29138774 31220115 33301456 35142240 37464138 41626820 43708161 49952184 52713360 58277548 62440230 66602912 72846935 74928276 83253640 87416322 93660345 99904368 105426720 116555096 124880460 131124483 145693870 149856552 166507280 174832644 187320690 199808736 218540805 233110192 249760920 262248966 291387740 299713104 333014560 349665288 374641380 437081610 466220384 499521840 524497932 582775480 599426208 655622415 699330576 749282760 874163220 999043680 1048995864 1165550960 1311244830 1398661152 1498565520 1748326440 2097991728 2331101920 2622489660 2997131040 3496652880 4195983456 5244979320 6993305760 10489958640 20979917280
• Sum of all divisors σ(n): 82240704000
• Sum of proper divisors (its aliquot sum) s(n): 61260786720
• 20979917280 is an abundant number, because the sum of its proper divisors (61260786720) is greater than itself. Its abundance is 40280869440

Bases of 20979917280

• Binary: 10011100010100000000010000111100000₂
• Hexadecimal: 0x4E28021E0
• Base-36: 9MYWFS0

Squares and roots of 20979917280

• 20979917280 squared (20979917280²) is 440156929075642598400
• 20979917280 cubed (20979917280³) is 9234455962225808577276260352000
• The square root of 20979917280 is 144844.4589205953
• The cube root of 20979917280 is 2758.0444244239

Scales and comparisons

• 20,979,917,280 seconds is equal to 667 years, 5 weeks, 2 hours, 48 minutes.
• To count from 1 to 20,979,917,280 would take you about one thousand, three hundred thirty-four 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 20979917280 cubic inches would be around 229.8 feet tall.

Recreational maths with 20979917280

• 20979917280 backwards is 08271997902
• The number of decimal digits it has is: 11
• The sum of 20979917280's digits is 54
• More coming soon!