2021790420

Names of 2021790420

• Cardinal: 2021790420 can be written as Two billion, twenty-one million, seven hundred ninety thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.02179042 × 10⁹

Factors of 2021790420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 864036

Divisors of 2021790420

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 156 180 195 234 260 390 468 585 780 1170 2340 864013 1728026 2592039 3456052 4320065 5184078 7776117 8640130 10368156 11232169 12960195 15552234 17280260 22464338 25920390 31104468 33696507 38880585 44928676 51840780 56160845 67393014 77761170 101089521 112321690 134786028 155522340 168482535 202179042 224643380 336965070 404358084 505447605 673930140 1010895210 2021790420
• Sum of all divisors σ(n): 6604523016
• Sum of proper divisors (its aliquot sum) s(n): 4582732596
• 2021790420 is an abundant number, because the sum of its proper divisors (4582732596) is greater than itself. Its abundance is 2560942176

Bases of 2021790420

• Binary: 1111000100000100001001011010100₂
• Hexadecimal: 0x788212D4
• Base-36: XFPZH0

Squares and roots of 2021790420

• 2021790420 squared (2021790420²) is 4087636502403776400
• 2021790420 cubed (2021790420³) is 8264344321002262097342088000
• The square root of 2021790420 is 44964.3238579209
• The cube root of 2021790420 is 1264.4802334867

Scales and comparisons

• 2,021,790,420 seconds is equal to 64 years, 14 weeks, 6 days, 8 hours, 27 minutes.
• To count from 1 to 2,021,790,420 would take you about one hundred twenty-eight years!

  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 2021790420 cubic inches would be around 105.4 feet tall.

Recreational maths with 2021790420

• 2021790420 backwards is 0240971202
• The number of decimal digits it has is: 10
• The sum of 2021790420's digits is 27
• More coming soon!