29921220

Names of 29921220

• Cardinal: 29921220 can be written as Twenty-nine million, nine hundred twenty-one thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.992122 × 10⁷

Factors of 29921220

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 23764

Divisors of 29921220

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 23747 47494 71241 94988 118735 142482 166229 213723 237470 284964 332458 356205 427446 474940 498687 664916 712410 831145 854892 997374 1068615 1424820 1496061 1662290 1994748 2137230 2493435 2992122 3324580 4274460 4986870 5984244 7480305 9973740 14960610 29921220
• Sum of all divisors σ(n): 103731264
• Sum of proper divisors (its aliquot sum) s(n): 73810044
• 29921220 is an abundant number, because the sum of its proper divisors (73810044) is greater than itself. Its abundance is 43888824

Bases of 29921220

• Binary: 1110010001000111111000100₂
• Hexadecimal: 0x1C88FC4
• Base-36: HTBD0

Squares and roots of 29921220

• 29921220 squared (29921220²) is 895279406288400
• 29921220 cubed (29921220³) is 26787852077024599848000
• The square root of 29921220 is 5470.0292503789
• The cube root of 29921220 is 310.4510257499

Scales and comparisons

• 29,921,220 seconds is equal to 49 weeks, 3 days, 7 hours, 27 minutes.
• To count from 1 to 29,921,220 would take you about twenty-two 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 29921220 cubic inches would be around 25.9 feet tall.

Recreational maths with 29921220

• 29921220 backwards is 02212992
• The number of decimal digits it has is: 8
• The sum of 29921220's digits is 27
• More coming soon!