80138720

Names of 80138720

• Cardinal: 80138720 can be written as Eighty million, one hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 8.013872 × 10⁷

Factors of 80138720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 296

Divisors of 80138720

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 32 40 62 80 107 124 151 155 160 214 248 302 310 428 496 535 604 620 755 856 992 1070 1208 1240 1510 1712 2140 2416 2480 3020 3317 3424 4280 4681 4832 4960 6040 6634 8560 9362 12080 13268 16157 16585 17120 18724 23405 24160 26536 32314 33170 37448 46810 53072 64628 66340 74896 80785 93620 106144 129256 132680 149792 161570 187240 258512 265360 323140 374480 500867 517024 530720 646280 748960 1001734 1292560 2003468 2504335 2585120 4006936 5008670 8013872 10017340 16027744 20034680 40069360 80138720
• Sum of all divisors σ(n): 198567936
• Sum of proper divisors (its aliquot sum) s(n): 118429216
• 80138720 is an abundant number, because the sum of its proper divisors (118429216) is greater than itself. Its abundance is 38290496

Bases of 80138720

• Binary: 100110001101101000111100000₂
• Hexadecimal: 0x4C6D1E0
• Base-36: 1BPNFK

Squares and roots of 80138720

• 80138720 squared (80138720²) is 6422214443238400
• 80138720 cubed (80138720³) is 514668045046638030848000
• The square root of 80138720 is 8952.0232350011
• The cube root of 80138720 is 431.1358468427

Scales and comparisons

• 80,138,720 seconds is equal to 2 years, 28 weeks, 3 days, 12 hours, 45 minutes, 20 seconds.
• To count from 1 to 80,138,720 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 80138720 cubic inches would be around 35.9 feet tall.

Recreational maths with 80138720

• 80138720 backwards is 02783108
• The number of decimal digits it has is: 8
• The sum of 80138720's digits is 29
• More coming soon!