20409937920

Names of 20409937920

• Cardinal: 20409937920 can be written as Twenty billion, four hundred nine million, nine hundred thirty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.040993792 × 10¹⁰

Factors of 20409937920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 110741

Divisors of 20409937920

• Number of divisors d(n): 156
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 256 288 320 360 384 480 512 576 640 720 768 960 1024 1152 1280 1440 1536 1920 2048 2304 2560 2880 3072 3840 4096 4608 5120 5760 6144 7680 9216 10240 11520 12288 15360 18432 20480 23040 30720 36864 46080 61440 92160 110731 184320 221462 332193 442924 553655 664386 885848 996579 1107310 1328772 1660965 1771696 1993158 2214620 2657544 3321930 3543392 3986316 4429240 4982895 5315088 6643860 7086784 7972632 8858480 9965790 10630176 13287720 14173568 15945264 17716960 19931580 21260352 26575440 28347136 31890528 35433920 39863160 42520704 53150880 56694272 63781056 70867840 79726320 85041408 106301760 113388544 127562112 141735680 159452640 170082816 212603520 226777088 255124224 283471360 318905280 340165632 425207040 453554176 510248448 566942720 637810560 680331264 850414080 1020496896 1133885440 1275621120 1360662528 1700828160 2040993792 2267770880 2551242240 3401656320 4081987584 5102484480 6803312640 10204968960 20409937920
• Sum of all divisors σ(n): 70746453336
• Sum of proper divisors (its aliquot sum) s(n): 50336515416
• 20409937920 is an abundant number, because the sum of its proper divisors (50336515416) is greater than itself. Its abundance is 29926577496

Bases of 20409937920

• Binary: 10011000000100001101111000000000000₂
• Hexadecimal: 0x4C086F000
• Base-36: 9DJJSW0

Squares and roots of 20409937920

• 20409937920 squared (20409937920²) is 416565565898253926400
• 20409937920 cubed (20409937920³) is 8502077339593031674220249088000
• The square root of 20409937920 is 142863.3540135469
• The cube root of 20409937920 is 2732.8380420565

Scales and comparisons

• 20,409,937,920 seconds is equal to 648 years, 50 weeks, 4 days, 3 hours, 12 minutes.
• To count from 1 to 20,409,937,920 would take you about one thousand, two hundred ninety-seven 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 20409937920 cubic inches would be around 227.7 feet tall.

Recreational maths with 20409937920

• 20409937920 backwards is 02973990402
• 20409937920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20409937920's digits is 45
• More coming soon!