9901920

Names of 9901920

• Cardinal: 9901920 can be written as Nine million, nine hundred one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 9.90192 × 10⁶

Factors of 9901920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 438

Divisors of 9901920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 49 56 60 70 80 84 96 98 105 112 120 140 147 160 168 196 210 224 240 245 280 294 336 392 420 421 480 490 560 588 672 735 784 840 842 980 1120 1176 1263 1470 1568 1680 1684 1960 2105 2352 2526 2940 2947 3360 3368 3920 4210 4704 5052 5880 5894 6315 6736 7840 8420 8841 10104 11760 11788 12630 13472 14735 16840 17682 20208 20629 23520 23576 25260 29470 33680 35364 40416 41258 44205 47152 50520 58940 61887 67360 70728 82516 88410 94304 101040 103145 117880 123774 141456 165032 176820 202080 206290 235760 247548 282912 309435 330064 353640 412580 471520 495096 618870 660128 707280 825160 990192 1237740 1414560 1650320 1980384 2475480 3300640 4950960 9901920
• Sum of all divisors σ(n): 36369648
• Sum of proper divisors (its aliquot sum) s(n): 26467728
• 9901920 is an abundant number, because the sum of its proper divisors (26467728) is greater than itself. Its abundance is 16565808

Bases of 9901920

• Binary: 100101110001011101100000₂
• Hexadecimal: 0x971760
• Base-36: 5W8DC

Squares and roots of 9901920

• 9901920 squared (9901920²) is 98048019686400
• 9901920 cubed (9901920³) is 970863647093157888000
• The square root of 9901920 is 3146.7316377473
• The cube root of 9901920 is 214.7367970821

Scales and comparisons

• 9,901,920 seconds is equal to 16 weeks, 2 days, 14 hours, 32 minutes.
• To count from 1 to 9,901,920 would take you about twenty-four 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 9901920 cubic inches would be around 17.9 feet tall.

Recreational maths with 9901920

• 9901920 backwards is 0291099
• 9901920 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 9901920's digits is 30
• More coming soon!