3998993280

Names of 3998993280

• Cardinal: 3998993280 can be written as Three billion, nine hundred ninety-eight million, nine hundred ninety-three thousand, two hundred eighty.

Scientific notation

• Scientific notation: 3.99899328 × 10⁹

Factors of 3998993280

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 71860

Divisors of 3998993280

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 29 30 32 40 48 58 60 64 80 87 96 116 120 128 145 160 174 192 232 240 290 320 348 384 435 464 480 580 640 696 870 928 960 1160 1392 1740 1856 1920 2320 2784 3480 3712 4640 5568 6960 9280 11136 13920 18560 27840 55680 71821 143642 215463 287284 359105 430926 574568 718210 861852 1077315 1149136 1436420 1723704 2082809 2154630 2298272 2872840 3447408 4165618 4309260 4596544 5745680 6248427 6894816 8331236 8618520 9193088 10414045 11491360 12496854 13789632 16662472 17237040 20828090 22982720 24993708 27579264 31242135 33324944 34474080 41656180 45965440 49987416 62484270 66649888 68948160 83312360 99974832 124968540 133299776 137896320 166624720 199949664 249937080 266599552 333249440 399899328 499874160 666498880 799798656 999748320 1332997760 1999496640 3998993280
• Sum of all divisors σ(n): 13186519200
• Sum of proper divisors (its aliquot sum) s(n): 9187525920
• 3998993280 is an abundant number, because the sum of its proper divisors (9187525920) is greater than itself. Its abundance is 5188532640

Bases of 3998993280

• Binary: 11101110010110111100101110000000₂
• Hexadecimal: 0xEE5BCB80
• Base-36: 1U4WAYO

Squares and roots of 3998993280

• 3998993280 squared (3998993280²) is 15991947253485158400
• 3998993280 cubed (3998993280³) is 63951689600801605021335552000
• The square root of 3998993280 is 63237.5938821205
• The cube root of 3998993280 is 1587.2678684287

Scales and comparisons

• 3,998,993,280 seconds is equal to 127 years, 8 weeks, 15 hours, 28 minutes.
• To count from 1 to 3,998,993,280 would take you about two hundred fifty-four 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 3998993280 cubic inches would be around 132.3 feet tall.

Recreational maths with 3998993280

• 3998993280 backwards is 0823998993
• 3998993280 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 3998993280's digits is 60
• More coming soon!