30556390

Names of 30556390

• Cardinal: 30556390 can be written as Thirty million, five hundred fifty-six thousand, three hundred ninety.

Scientific notation

• Scientific notation: 3.055639 × 10⁷

Factors of 30556390

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 688

Divisors of 30556390

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 31 62 155 241 310 409 482 818 1205 2045 2410 4090 7471 12679 14942 25358 37355 63395 74710 98569 126790 197138 492845 985690 3055639 6111278 15278195 30556390
• Sum of all divisors σ(n): 57150720
• Sum of proper divisors (its aliquot sum) s(n): 26594330
• 30556390 is a deficient number, because the sum of its proper divisors (26594330) is less than itself. Its deficiency is 3962060

Bases of 30556390

• Binary: 1110100100100000011100110₂
• Hexadecimal: 0x1D240E6
• Base-36: I6XGM

Squares and roots of 30556390

• 30556390 squared (30556390²) is 933692969832100
• 30556390 cubed (30556390³) is 28530286526447882119000
• The square root of 30556390 is 5527.7834617503
• The cube root of 30556390 is 312.6324217451

Scales and comparisons

• 30,556,390 seconds is equal to 50 weeks, 3 days, 15 hours, 53 minutes, 10 seconds.
• To count from 1 to 30,556,390 would take you about twenty-three 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 30556390 cubic inches would be around 26.1 feet tall.

Recreational maths with 30556390

• 30556390 backwards is 09365503
• 30556390 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30556390's digits is 31
• More coming soon!