72394830

Names of 72394830

• Cardinal: 72394830 can be written as Seventy-two million, three hundred ninety-four thousand, eight hundred thirty.

Scientific notation

• Scientific notation: 7.239483 × 10⁷

Factors of 72394830

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3756

Divisors of 72394830

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 73 90 135 146 219 270 365 438 657 730 1095 1314 1971 2190 3285 3673 3942 6570 7346 9855 11019 18365 19710 22038 33057 36730 55095 66114 99171 110190 165285 198342 268129 330570 495855 536258 804387 991710 1340645 1608774 2413161 2681290 4021935 4826322 7239483 8043870 12065805 14478966 24131610 36197415 72394830
• Sum of all divisors σ(n): 195750720
• Sum of proper divisors (its aliquot sum) s(n): 123355890
• 72394830 is an abundant number, because the sum of its proper divisors (123355890) is greater than itself. Its abundance is 50961060

Bases of 72394830

• Binary: 100010100001010100001001110₂
• Hexadecimal: 0x450A84E
• Base-36: 173O7I

Squares and roots of 72394830

• 72394830 squared (72394830²) is 5241011410728900
• 72394830 cubed (72394830³) is 379422130107778891587000
• The square root of 72394830 is 8508.5151466047
• The cube root of 72394830 is 416.7758227791

Scales and comparisons

• 72,394,830 seconds is equal to 2 years, 15 weeks, 4 days, 21 hours, 40 minutes, 30 seconds.
• To count from 1 to 72,394,830 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 72394830 cubic inches would be around 34.7 feet tall.

Recreational maths with 72394830

• 72394830 backwards is 03849327
• The number of decimal digits it has is: 8
• The sum of 72394830's digits is 36
• More coming soon!