9998904780

Names of 9998904780

• Cardinal: 9998904780 can be written as Nine billion, nine hundred ninety-eight million, nine hundred four thousand, seven hundred eighty.

Scientific notation

• Scientific notation: 9.99890478 × 10⁹

Factors of 9998904780

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1915538

Divisors of 9998904780

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 29 30 36 45 58 60 87 90 116 145 174 180 261 290 348 435 522 580 870 1044 1305 1740 2610 5220 1915499 3830998 5746497 7661996 9577495 11492994 17239491 19154990 22985988 28732485 34478982 38309980 55549471 57464970 68957964 86197455 111098942 114929940 166648413 172394910 222197884 277747355 333296826 344789820 499945239 555494710 666593652 833242065 999890478 1110989420 1666484130 1999780956 2499726195 3332968260 4999452390 9998904780
• Sum of all divisors σ(n): 31375890000
• Sum of proper divisors (its aliquot sum) s(n): 21376985220
• 9998904780 is an abundant number, because the sum of its proper divisors (21376985220) is greater than itself. Its abundance is 11378080440

Bases of 9998904780

• Binary: 1001010011111110110010110111001100₂
• Hexadecimal: 0x253FB2DCC
• Base-36: 4LD38B0

Squares and roots of 9998904780

• 9998904780 squared (9998904780²) is 99978096799506848400
• 9998904780 cubed (9998904780³) is 999671469983891728109495352000
• The square root of 9998904780 is 99994.5237500535
• The cube root of 9998904780 is 2154.3560344949

Scales and comparisons

• 9,998,904,780 seconds is equal to 317 years, 48 weeks, 4 days, 1 hour, 33 minutes.
• To count from 1 to 9,998,904,780 would take you about six hundred thirty-five 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 9998904780 cubic inches would be around 179.5 feet tall.

Recreational maths with 9998904780

• 9998904780 backwards is 0874098999
• The number of decimal digits it has is: 10
• The sum of 9998904780's digits is 63
• More coming soon!