398629980

Names of 398629980

• Cardinal: 398629980 can be written as Three hundred ninety-eight million, six hundred twenty-nine thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 3.9862998 × 10⁸

Factors of 398629980

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 316390

Divisors of 398629980

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 316373 632746 949119 1265492 1581865 1898238 2214611 2847357 3163730 3796476 4429222 4745595 5694714 6327460 6643833 8858444 9491190 11073055 11389428 13287666 14236785 18982380 19931499 22146110 26575332 28473570 33219165 39862998 44292220 56947140 66438330 79725996 99657495 132876660 199314990 398629980
• Sum of all divisors σ(n): 1381921632
• Sum of proper divisors (its aliquot sum) s(n): 983291652
• 398629980 is an abundant number, because the sum of its proper divisors (983291652) is greater than itself. Its abundance is 584661672

Bases of 398629980

• Binary: 10111110000101001110001011100₂
• Hexadecimal: 0x17C29C5C
• Base-36: 6LC0V0

Squares and roots of 398629980

• 398629980 squared (398629980²) is 158905860954800400
• 398629980 cubed (398629980³) is 63344640174294864355992000
• The square root of 398629980 is 19965.7201222495
• The cube root of 398629980 is 735.9641380407

Scales and comparisons

• 398,629,980 seconds is equal to 12 years, 35 weeks, 18 hours, 33 minutes.
• To count from 1 to 398,629,980 would take you about nineteen 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 398629980 cubic inches would be around 61.3 feet tall.

Recreational maths with 398629980

• 398629980 backwards is 089926893
• The number of decimal digits it has is: 9
• The sum of 398629980's digits is 54
• More coming soon!