128120080

Names of 128120080

• Cardinal: 128120080 can be written as One hundred twenty-eight million, one hundred twenty thousand and eighty.

Scientific notation

• Scientific notation: 1.2812008 × 10⁸

Factors of 128120080

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 179

Divisors of 128120080

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 41 44 53 55 67 80 82 88 106 110 134 164 176 205 212 220 265 268 328 335 410 424 440 451 530 536 583 656 670 737 820 848 880 902 1060 1072 1166 1340 1474 1640 1804 2120 2173 2255 2332 2680 2747 2915 2948 3280 3551 3608 3685 4240 4346 4510 4664 5360 5494 5830 5896 7102 7216 7370 8692 9020 9328 10865 10988 11660 11792 13735 14204 14740 17384 17755 18040 21730 21976 23320 23903 27470 28408 29480 30217 34768 35510 36080 39061 43460 43952 46640 47806 54940 56816 58960 60434 71020 78122 86920 95612 109880 119515 120868 142040 145591 151085 156244 173840 191224 195305 219760 239030 241736 284080 291182 302170 312488 382448 390610 478060 483472 582364 604340 624976 727955 781220 956120 1164728 1208680 1455910 1562440 1601501 1912240 2329456 2417360 2911820 3124880 3203002 5823640 6406004 8007505 11647280 12812008 16015010 25624016 32030020 64060040 128120080
• Sum of all divisors σ(n): 344227968
• Sum of proper divisors (its aliquot sum) s(n): 216107888
• 128120080 is an abundant number, because the sum of its proper divisors (216107888) is greater than itself. Its abundance is 87987808

Bases of 128120080

• Binary: 111101000101111010100010000₂
• Hexadecimal: 0x7A2F510
• Base-36: 24A234

Squares and roots of 128120080

• 128120080 squared (128120080²) is 16414754899206400
• 128120080 cubed (128120080³) is 2103059710866715904512000
• The square root of 128120080 is 11319.0140913421
• The cube root of 128120080 is 504.1259658269

Scales and comparisons

• 128,120,080 seconds is equal to 4 years, 3 weeks, 5 days, 20 hours, 54 minutes, 40 seconds.
• To count from 1 to 128,120,080 would take you about six 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 128120080 cubic inches would be around 42 feet tall.

Recreational maths with 128120080

• 128120080 backwards is 080021821
• 128120080 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 128120080's digits is 22
• More coming soon!