72490

Names of 72490

• Cardinal: 72490 can be written as Seventy-two thousand, four hundred ninety.

Scientific notation

• Scientific notation: 7.249 × 10⁴

Factors of 72490

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 677

Divisors of 72490

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 5 10 11 22 55 110 659 1318 3295 6590 7249 14498 36245 72490
• Sum of all divisors σ(n): 142560
• Sum of proper divisors (its aliquot sum) s(n): 70070
• 72490 is a deficient number, because the sum of its proper divisors (70070) is less than itself. Its deficiency is 2420

Bases of 72490

• Binary: 10001101100101010₂
• Hexadecimal: 0x11B2A
• Base-36: 1JXM

Squares and roots of 72490

• 72490 squared (72490²) is 5254800100
• 72490 cubed (72490³) is 380920459249000
• The square root of 72490 is 269.2396701825
• The cube root of 72490 is 41.6958373507

Scales and comparisons

• 72,490 seconds is equal to 20 hours, 8 minutes, 10 seconds.
• To count from 1 to 72,490 would take you about twenty 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 72490 cubic inches would be around 3.5 feet tall.

Recreational maths with 72490

• 72490 backwards is 09427
• 72490 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 72490's digits is 22
• More coming soon!