21029008

Names of 21029008

• Cardinal: 21029008 can be written as Twenty-one million, twenty-nine thousand and eight.

Scientific notation

• Scientific notation: 2.1029008 × 10⁷

Factors of 21029008

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 134

Divisors of 21029008

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 8 11 13 14 16 22 26 28 44 52 56 77 88 91 101 104 112 143 154 169 176 182 202 208 286 308 338 364 404 572 616 676 707 728 808 1001 1111 1144 1183 1232 1313 1352 1414 1456 1616 1859 2002 2222 2288 2366 2626 2704 2828 3718 4004 4444 4732 5252 5656 7436 7777 8008 8888 9191 9464 10504 11312 13013 14443 14872 15554 16016 17069 17776 18382 18928 21008 26026 28886 29744 31108 34138 36764 52052 57772 62216 68276 73528 101101 104104 115544 119483 124432 136552 147056 187759 202202 208208 231088 238966 273104 375518 404404 477932 751036 808808 955864 1314313 1502072 1617616 1911728 2628626 3004144 5257252 10514504 21029008
• Sum of all divisors σ(n): 55550016
• Sum of proper divisors (its aliquot sum) s(n): 34521008
• 21029008 is an abundant number, because the sum of its proper divisors (34521008) is greater than itself. Its abundance is 13492000

Bases of 21029008

• Binary: 1010000001110000010010000₂
• Hexadecimal: 0x140E090
• Base-36: CIQ34

Squares and roots of 21029008

• 21029008 squared (21029008²) is 442219177464064
• 21029008 cubed (21029008³) is 9299430620645221568512
• The square root of 21029008 is 4585.7396349989
• The cube root of 21029008 is 276.0193923223

Scales and comparisons

• 21,029,008 seconds is equal to 34 weeks, 5 days, 9 hours, 23 minutes, 28 seconds.
• To count from 1 to 21,029,008 would take you about two hours!

  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 21029008 cubic inches would be around 23 feet tall.

Recreational maths with 21029008

• 21029008 backwards is 80092012
• 21029008 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21029008's digits is 22
• More coming soon!