20151090

Names of 20151090

• Cardinal: 20151090 can be written as Twenty million, one hundred fifty-one thousand and ninety.

Scientific notation

• Scientific notation: 2.015109 × 10⁷

Factors of 20151090

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 221

Divisors of 20151090

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 30 41 43 45 82 86 90 123 127 129 205 215 246 254 258 369 381 387 410 430 615 635 645 738 762 774 1143 1230 1270 1290 1763 1845 1905 1935 2286 3526 3690 3810 3870 5207 5289 5461 5715 8815 10414 10578 10922 11430 15621 15867 16383 17630 26035 26445 27305 31242 31734 32766 46863 49149 52070 52890 54610 78105 79335 81915 93726 98298 156210 158670 163830 223901 234315 245745 447802 468630 491490 671703 1119505 1343406 2015109 2239010 3358515 4030218 6717030 10075545 20151090
• Sum of all divisors σ(n): 55351296
• Sum of proper divisors (its aliquot sum) s(n): 35200206
• 20151090 is an abundant number, because the sum of its proper divisors (35200206) is greater than itself. Its abundance is 15049116

Bases of 20151090

• Binary: 1001100110111101100110010₂
• Hexadecimal: 0x1337B32
• Base-36: BZWOI

Squares and roots of 20151090

• 20151090 squared (20151090²) is 406066428188100
• 20151090 cubed (20151090³) is 8182681140396940029000
• The square root of 20151090 is 4488.9965471137
• The cube root of 20151090 is 272.1235831869

Scales and comparisons

• 20,151,090 seconds is equal to 33 weeks, 2 days, 5 hours, 31 minutes, 30 seconds.
• To count from 1 to 20,151,090 would take you about forty-nine 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 20151090 cubic inches would be around 22.7 feet tall.

Recreational maths with 20151090

• 20151090 backwards is 09015102
• 20151090 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20151090's digits is 18
• More coming soon!