20389740

Names of 20389740

• Cardinal: 20389740 can be written as Twenty million, three hundred eighty-nine thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.038974 × 10⁷

Factors of 20389740

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1189

Divisors of 20389740

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 43 60 70 84 86 105 129 140 172 210 215 258 301 420 430 516 602 645 860 903 1129 1204 1290 1505 1806 2258 2580 3010 3387 3612 4515 4516 5645 6020 6774 7903 9030 11290 13548 15806 16935 18060 22580 23709 31612 33870 39515 47418 48547 67740 79030 94836 97094 118545 145641 158060 194188 237090 242735 291282 339829 474180 485470 582564 679658 728205 970940 1019487 1359316 1456410 1699145 2038974 2912820 3398290 4077948 5097435 6796580 10194870 20389740
• Sum of all divisors σ(n): 66823680
• Sum of proper divisors (its aliquot sum) s(n): 46433940
• 20389740 is an abundant number, because the sum of its proper divisors (46433940) is greater than itself. Its abundance is 26044200

Bases of 20389740

• Binary: 1001101110001111101101100₂
• Hexadecimal: 0x1371F6C
• Base-36: C50TO

Squares and roots of 20389740

• 20389740 squared (20389740²) is 415741497267600
• 20389740 cubed (20389740³) is 8476861036497074424000
• The square root of 20389740 is 4515.4999723175
• The cube root of 20389740 is 273.1936261391

Scales and comparisons

• 20,389,740 seconds is equal to 33 weeks, 4 days, 23 hours, 49 minutes.
• To count from 1 to 20,389,740 would take you about fifty 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 20389740 cubic inches would be around 22.8 feet tall.

Recreational maths with 20389740

• 20389740 backwards is 04798302
• The number of decimal digits it has is: 8
• The sum of 20389740's digits is 33
• More coming soon!