139238820

Names of 139238820

• Cardinal: 139238820 can be written as One hundred thirty-nine million, two hundred thirty-eight thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 1.3923882 × 10⁸

Factors of 139238820

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1949

Divisors of 139238820

• Number of divisors d(n): 144
• 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 59 60 63 70 84 90 105 118 126 140 177 180 210 236 252 295 315 354 413 420 531 590 630 708 826 885 1062 1180 1239 1260 1652 1770 1873 2065 2124 2478 2655 3540 3717 3746 4130 4956 5310 5619 6195 7434 7492 8260 9365 10620 11238 12390 13111 14868 16857 18585 18730 22476 24780 26222 28095 33714 37170 37460 39333 52444 56190 65555 67428 74340 78666 84285 110507 112380 117999 131110 157332 168570 196665 221014 235998 262220 331521 337140 393330 442028 471996 552535 589995 663042 773549 786660 994563 1105070 1179990 1326084 1547098 1657605 1989126 2210140 2320647 2359980 3094196 3315210 3867745 3978252 4641294 4972815 6630420 6961941 7735490 9282588 9945630 11603235 13923882 15470980 19891260 23206470 27847764 34809705 46412940 69619410 139238820
• Sum of all divisors σ(n): 491137920
• Sum of proper divisors (its aliquot sum) s(n): 351899100
• 139238820 is an abundant number, because the sum of its proper divisors (351899100) is greater than itself. Its abundance is 212660280

Bases of 139238820

• Binary: 1000010011001001110110100100₂
• Hexadecimal: 0x84C9DA4
• Base-36: 2AWDD0

Squares and roots of 139238820

• 139238820 squared (139238820²) is 19387448994992400
• 139238820 cubed (139238820³) is 2699485520872927684968000
• The square root of 139238820 is 11799.9499998941
• The cube root of 139238820 is 518.3066464987

Scales and comparisons

• 139,238,820 seconds is equal to 4 years, 22 weeks, 1 day, 13 hours, 27 minutes.
• To count from 1 to 139,238,820 would take you about six 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 139238820 cubic inches would be around 43.2 feet tall.

Recreational maths with 139238820

• 139238820 backwards is 028832931
• 139238820 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 139238820's digits is 36
• More coming soon!