7128142128

Names of 7128142128

• Cardinal: 7128142128 can be written as Seven billion, one hundred twenty-eight million, one hundred forty-two thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 7.128142128 × 10⁹

Factors of 7128142128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1140

Divisors of 7128142128

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 71 72 108 142 144 213 216 284 307 426 432 568 614 639 757 852 921 1136 1228 1278 1514 1704 1842 1917 2271 2456 2556 2763 3028 3408 3684 3834 4542 4912 5112 5526 6056 6813 7368 7668 8289 9084 10224 11052 12112 13626 14736 15336 16578 18168 20439 21797 22104 27252 30672 33156 36336 40878 43594 44208 53747 54504 65391 66312 81756 87188 107494 109008 130782 132624 161241 163512 174376 196173 214988 232399 261564 322482 327024 348752 392346 429976 464798 483723 523128 588519 644964 697197 784692 859952 929596 967446 1046256 1177038 1289928 1394394 1451169 1569384 1859192 1934892 2091591 2354076 2579856 2788788 2902338 3138768 3718384 3869784 4183182 4708152 5577576 5804676 6274773 7739568 8366364 9416304 11155152 11609352 12549546 16500329 16732728 23218704 25099092 33000658 33465456 49500987 50198184 66001316 99001974 100396368 132002632 148502961 198003948 264005264 297005922 396007896 445508883 594011844 792015792 891017766 1188023688 1782035532 2376047376 3564071064 7128142128
• Sum of all divisors σ(n): 20843665920
• Sum of proper divisors (its aliquot sum) s(n): 13715523792
• 7128142128 is an abundant number, because the sum of its proper divisors (13715523792) is greater than itself. Its abundance is 6587381664

Bases of 7128142128

• Binary: 110101000110111101101000100110000₂
• Hexadecimal: 0x1A8DED130
• Base-36: 39VWTO0

Squares and roots of 7128142128

• 7128142128 squared (7128142128²) is 50810410196968368384
• 7128142128 cubed (7128142128³) is 362183825465971004561413681152
• The square root of 7128142128 is 84428.3253890541
• The cube root of 7128142128 is 1924.5333891705

Scales and comparisons

• 7,128,142,128 seconds is equal to 226 years, 33 weeks, 6 days, 15 hours, 28 minutes, 48 seconds.
• To count from 1 to 7,128,142,128 would take you about four hundred fifty-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 7128142128 cubic inches would be around 160.4 feet tall.

Recreational maths with 7128142128

• 7128142128 backwards is 8212418217
• 7128142128 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 7128142128's digits is 36
• More coming soon!