990392640

Names of 990392640

• Cardinal: 990392640 can be written as Nine hundred ninety million, three hundred ninety-two thousand, six hundred forty.

Scientific notation

• Scientific notation: 9.9039264 × 10⁸

Factors of 990392640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2070

Divisors of 990392640

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 859 960 1201 1718 2402 2577 3436 3603 4295 4804 5154 6005 6872 7206 8590 9608 10308 12010 12885 13744 14412 17180 18015 19216 20616 24020 25770 27488 28824 34360 36030 38432 41232 48040 51540 54976 57648 68720 72060 76864 82464 96080 103080 115296 137440 144120 164928 192160 206160 230592 274880 288240 384320 412320 576480 824640 1031659 1152960 2063318 3094977 4126636 5158295 6189954 8253272 10316590 12379908 15474885 16506544 20633180 24759816 30949770 33013088 41266360 49519632 61899540 66026176 82532720 99039264 123799080 165065440 198078528 247598160 330130880 495196320 990392640
• Sum of all divisors σ(n): 3150778560
• Sum of proper divisors (its aliquot sum) s(n): 2160385920
• 990392640 is an abundant number, because the sum of its proper divisors (2160385920) is greater than itself. Its abundance is 1169993280

Bases of 990392640

• Binary: 111011000010000011000101000000₂
• Hexadecimal: 0x3B083140
• Base-36: GDNJUO

Squares and roots of 990392640

• 990392640 squared (990392640²) is 980877581366169600
• 990392640 cubed (990392640³) is 971453937326055516831744000
• The square root of 990392640 is 31470.5042857593
• The cube root of 990392640 is 996.7872358671

Scales and comparisons

• 990,392,640 seconds is equal to 31 years, 25 weeks, 3 days, 21 hours, 4 minutes.
• To count from 1 to 990,392,640 would take you about forty-seven 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 990392640 cubic inches would be around 83.1 feet tall.

Recreational maths with 990392640

• 990392640 backwards is 046293099
• The number of decimal digits it has is: 9
• The sum of 990392640's digits is 42
• More coming soon!