20920645440

Names of 20920645440

• Cardinal: 20920645440 can be written as Twenty billion, nine hundred twenty million, six hundred forty-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.092064544 × 10¹⁰

Factors of 20920645440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 105310

Divisors of 20920645440

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 27 30 32 36 40 45 46 48 54 60 64 69 72 80 90 92 96 108 115 120 135 138 144 160 180 184 192 207 216 230 240 270 276 288 320 345 360 368 414 432 460 480 540 552 576 621 690 720 736 828 864 920 960 1035 1080 1104 1242 1380 1440 1472 1656 1728 1840 2070 2160 2208 2484 2760 2880 3105 3312 3680 4140 4320 4416 4968 5520 6210 6624 7360 8280 8640 9936 11040 12420 13248 16560 19872 22080 24840 33120 39744 49680 66240 99360 105277 198720 210554 315831 421108 526385 631662 842216 947493 1052770 1263324 1579155 1684432 1894986 2105540 2421371 2526648 2842479 3158310 3368864 3789972 4211080 4737465 4842742 5053296 5684958 6316620 6737728 7264113 7579944 8422160 9474930 9685484 10106592 11369916 12106855 12633240 14212395 14528226 15159888 16844320 18949860 19370968 20213184 21792339 22739832 24213710 25266480 28424790 29056452 30319776 33688640 36320565 37899720 38741936 43584678 45479664 48427420 50532960 56849580 58112904 60639552 65377017 72641130 75799440 77483872 87169356 90959328 96854840 101065920 108961695 113699160 116225808 130754034 145282260 151598880 154967744 174338712 181918656 193709680 217923390 227398320 232451616 261508068 290564520 303197760 326885085 348677424 387419360 435846780 454796640 464903232 523016136 581129040 653770170 697354848 774838720 871693560 909593280 1046032272 1162258080 1307540340 1394709696 1743387120 2092064544 2324516160 2615080680 3486774240 4184129088 5230161360 6973548480 10460322720 20920645440
• Sum of all divisors σ(n): 77012962560
• Sum of proper divisors (its aliquot sum) s(n): 56092317120
• 20920645440 is an abundant number, because the sum of its proper divisors (56092317120) is greater than itself. Its abundance is 35171671680

Bases of 20920645440

• Binary: 10011011110111101111011011101000000₂
• Hexadecimal: 0x4DEF7B740
• Base-36: 9LZM1C0

Squares and roots of 20920645440

• 20920645440 squared (20920645440²) is 437673405626192793600
• 20920645440 cubed (20920645440³) is 9156410137622880611988701184000
• The square root of 20920645440 is 144639.7090705041
• The cube root of 20920645440 is 2755.4446595253

Scales and comparisons

• 20,920,645,440 seconds is equal to 665 years, 11 weeks, 2 hours, 24 minutes.
• To count from 1 to 20,920,645,440 would take you about one thousand, three hundred thirty 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 20920645440 cubic inches would be around 229.6 feet tall.

Recreational maths with 20920645440

• 20920645440 backwards is 04454602902
• 20920645440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20920645440's digits is 36
• More coming soon!