20434890

Names of 20434890

• Cardinal: 20434890 can be written as Twenty million, four hundred thirty-four thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.043489 × 10⁷

Factors of 20434890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 164

Divisors of 20434890

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 31 35 42 43 62 70 73 86 93 105 129 146 155 186 210 215 217 219 258 301 310 365 430 434 438 465 511 602 645 651 730 903 930 1022 1085 1095 1290 1302 1333 1505 1533 1806 2170 2190 2263 2555 2666 3010 3066 3139 3255 3999 4515 4526 5110 6278 6510 6665 6789 7665 7998 9030 9331 9417 11315 13330 13578 15330 15695 15841 18662 18834 19995 21973 22630 27993 31390 31682 33945 39990 43946 46655 47085 47523 55986 65919 67890 79205 93310 94170 95046 97309 109865 131838 139965 158410 194618 219730 237615 279930 291927 329595 475230 486545 583854 659190 681163 973090 1362326 1459635 2043489 2919270 3405815 4086978 6811630 10217445 20434890
• Sum of all divisors σ(n): 60014592
• Sum of proper divisors (its aliquot sum) s(n): 39579702
• 20434890 is an abundant number, because the sum of its proper divisors (39579702) is greater than itself. Its abundance is 19144812

Bases of 20434890

• Binary: 1001101111100111111001010₂
• Hexadecimal: 0x137CFCA
• Base-36: C5ZNU

Squares and roots of 20434890

• 20434890 squared (20434890²) is 417584729312100
• 20434890 cubed (20434890³) is 8533298009172539169000
• The square root of 20434890 is 4520.4966541299
• The cube root of 20434890 is 273.3951261575

Scales and comparisons

• 20,434,890 seconds is equal to 33 weeks, 5 days, 12 hours, 21 minutes, 30 seconds.
• To count from 1 to 20,434,890 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 20434890 cubic inches would be around 22.8 feet tall.

Recreational maths with 20434890

• 20434890 backwards is 09843402
• 20434890 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20434890's digits is 30
• More coming soon!