72990120

Names of 72990120

• Cardinal: 72990120 can be written as Seventy-two million, nine hundred ninety thousand, one hundred twenty.

Scientific notation

• Scientific notation: 7.299012 × 10⁷

Factors of 72990120

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2851

Divisors of 72990120

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 31 35 40 42 56 60 62 70 84 93 105 120 124 140 155 168 186 210 217 248 280 310 372 420 434 465 620 651 744 840 868 930 1085 1240 1302 1736 1860 2170 2604 2803 3255 3720 4340 5208 5606 6510 8409 8680 11212 13020 14015 16818 19621 22424 26040 28030 33636 39242 42045 56060 58863 67272 78484 84090 86893 98105 112120 117726 156968 168180 173786 196210 235452 260679 294315 336360 347572 392420 434465 470904 521358 588630 608251 695144 784840 868930 1042716 1177260 1216502 1303395 1737860 1824753 2085432 2354520 2433004 2606790 3041255 3475720 3649506 4866008 5213580 6082510 7299012 9123765 10427160 12165020 14598024 18247530 24330040 36495060 72990120
• Sum of all divisors σ(n): 258416640
• Sum of proper divisors (its aliquot sum) s(n): 185426520
• 72990120 is an abundant number, because the sum of its proper divisors (185426520) is greater than itself. Its abundance is 112436400

Bases of 72990120

• Binary: 100010110011011110110101000₂
• Hexadecimal: 0x459BDA8
• Base-36: 17GFJC

Squares and roots of 72990120

• 72990120 squared (72990120²) is 5327557617614400
• 72990120 cubed (72990120³) is 388859069816589169728000
• The square root of 72990120 is 8543.4255424859
• The cube root of 72990120 is 417.9150640515

Scales and comparisons

• 72,990,120 seconds is equal to 2 years, 16 weeks, 4 days, 19 hours, 2 minutes.
• To count from 1 to 72,990,120 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 72990120 cubic inches would be around 34.8 feet tall.

Recreational maths with 72990120

• 72990120 backwards is 02109927
• 72990120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 72990120's digits is 30
• More coming soon!