64490790

Names of 64490790

• Cardinal: 64490790 can be written as Sixty-four million, four hundred ninety thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 6.449079 × 10⁷

Factors of 64490790

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 23653

Divisors of 64490790

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 455 546 910 1365 2730 23623 47246 70869 118115 141738 165361 236230 307099 330722 354345 496083 614198 708690 826805 921297 992166 1535495 1653610 1842594 2149693 2480415 3070990 4299386 4606485 4960830 6449079 9212970 10748465 12898158 21496930 32245395 64490790
• Sum of all divisors σ(n): 190503936
• Sum of proper divisors (its aliquot sum) s(n): 126013146
• 64490790 is an abundant number, because the sum of its proper divisors (126013146) is greater than itself. Its abundance is 61522356

Bases of 64490790

• Binary: 11110110000000110100100110₂
• Hexadecimal: 0x3D80D26
• Base-36: 12E9EU

Squares and roots of 64490790

• 64490790 squared (64490790²) is 4159061994824100
• 64490790 cubed (64490790³) is 268221193705182120039000
• The square root of 64490790 is 8030.6157920797
• The cube root of 64490790 is 401.0198765859

Scales and comparisons

• 64,490,790 seconds is equal to 2 years, 2 weeks, 4 days, 10 hours, 6 minutes, 30 seconds.
• To count from 1 to 64,490,790 would take you about three 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 64490790 cubic inches would be around 33.4 feet tall.

Recreational maths with 64490790

• 64490790 backwards is 09709446
• 64490790 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 64490790's digits is 39
• More coming soon!