1388138080

Names of 1388138080

• Cardinal: 1388138080 can be written as One billion, three hundred eighty-eight million, one hundred thirty-eight thousand and eighty.

Scientific notation

• Scientific notation: 1.38813808 × 10⁹

Factors of 1388138080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2320

Divisors of 1388138080

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 853 1120 1453 1706 2906 3412 4265 5812 5971 6824 7265 8530 10171 11624 11942 13648 14530 17060 20342 23248 23884 27296 29060 29855 34120 40684 46496 47768 50855 58120 59710 68240 81368 95536 101710 116240 119420 136480 162736 191072 203420 232480 238840 325472 406840 477680 813680 955360 1239409 1627360 2478818 4957636 6197045 8675863 9915272 12394090 17351726 19830544 24788180 34703452 39661088 43379315 49576360 69406904 86758630 99152720 138813808 173517260 198305440 277627616 347034520 694069040 1388138080
• Sum of all divisors σ(n): 3754949184
• Sum of proper divisors (its aliquot sum) s(n): 2366811104
• 1388138080 is an abundant number, because the sum of its proper divisors (2366811104) is greater than itself. Its abundance is 978673024

Bases of 1388138080

• Binary: 1010010101111010100111001100000₂
• Hexadecimal: 0x52BD4E60
• Base-36: MYGM74

Squares and roots of 1388138080

• 1388138080 squared (1388138080²) is 1926927329146086400
• 1388138080 cubed (1388138080³) is 2674841202980376414810112000
• The square root of 1388138080 is 37257.7251050033
• The cube root of 1388138080 is 1115.5205007483

Scales and comparisons

• 1,388,138,080 seconds is equal to 44 years, 7 weeks, 1 day, 9 hours, 54 minutes, 40 seconds.
• To count from 1 to 1,388,138,080 would take you about eighty-eight 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 1388138080 cubic inches would be around 93 feet tall.

Recreational maths with 1388138080

• 1388138080 backwards is 0808318831
• 1388138080 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1388138080's digits is 40
• More coming soon!