20705440

Names of 20705440

• Cardinal: 20705440 can be written as Twenty million, seven hundred five thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.070544 × 10⁷

Factors of 20705440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 172

Divisors of 20705440

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 19 20 28 32 35 38 40 49 56 70 76 80 95 98 112 133 139 140 152 160 190 196 224 245 266 278 280 304 380 392 490 532 556 560 608 665 695 760 784 931 973 980 1064 1112 1120 1330 1390 1520 1568 1862 1946 1960 2128 2224 2641 2660 2780 3040 3724 3892 3920 4256 4448 4655 4865 5282 5320 5560 6811 7448 7784 7840 9310 9730 10564 10640 11120 13205 13622 14896 15568 18487 18620 19460 21128 21280 22240 26410 27244 29792 31136 34055 36974 37240 38920 42256 52820 54488 68110 73948 74480 77840 84512 92435 105640 108976 129409 136220 147896 148960 155680 184870 211280 217952 258818 272440 295792 369740 422560 517636 544880 591584 647045 739480 1035272 1089760 1294090 1478960 2070544 2588180 2957920 4141088 5176360 10352720 20705440
• Sum of all divisors σ(n): 60328800
• Sum of proper divisors (its aliquot sum) s(n): 39623360
• 20705440 is an abundant number, because the sum of its proper divisors (39623360) is greater than itself. Its abundance is 18917920

Bases of 20705440

• Binary: 1001110111111000010100000₂
• Hexadecimal: 0x13BF0A0
• Base-36: CBSF4

Squares and roots of 20705440

• 20705440 squared (20705440²) is 428715245593600
• 20705440 cubed (20705440³) is 8876737794723549184000
• The square root of 20705440 is 4550.3230654537
• The cube root of 20705440 is 274.5963886347

Scales and comparisons

• 20,705,440 seconds is equal to 34 weeks, 1 day, 15 hours, 30 minutes, 40 seconds.
• To count from 1 to 20,705,440 would take you about fifty-one weeks!

  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 20705440 cubic inches would be around 22.9 feet tall.

Recreational maths with 20705440

• 20705440 backwards is 04450702
• The number of decimal digits it has is: 8
• The sum of 20705440's digits is 22
• More coming soon!