138534240

Names of 138534240

• Cardinal: 138534240 can be written as One hundred thirty-eight million, five hundred thirty-four thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.3853424 × 10⁸

Factors of 138534240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 172

Divisors of 138534240

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 65 78 80 96 104 120 130 149 156 160 195 208 240 260 298 312 390 416 447 480 520 596 624 745 780 894 1040 1192 1248 1490 1560 1788 1937 2080 2235 2384 2980 3120 3576 3874 4470 4768 5811 5960 6240 7152 7748 8940 9685 11622 11920 14304 15496 17880 19370 22201 23244 23840 29055 30992 35760 38740 44402 46488 58110 61984 66603 71520 77480 88804 92976 111005 116220 133206 154960 177608 185952 222010 232440 266412 288613 309920 333015 355216 444020 464880 532824 577226 666030 710432 865839 888040 929760 1065648 1154452 1332060 1443065 1731678 1776080 2131296 2308904 2664120 2886130 3463356 3552160 4329195 4617808 5328240 5772260 6926712 8658390 9235616 10656480 11544520 13853424 17316780 23089040 27706848 34633560 46178080 69267120 138534240
• Sum of all divisors σ(n): 473125968
• Sum of proper divisors (its aliquot sum) s(n): 334591728
• 138534240 is an abundant number, because the sum of its proper divisors (334591728) is greater than itself. Its abundance is 196057488

Bases of 138534240

• Binary: 1000010000011101110101100000₂
• Hexadecimal: 0x841DD60
• Base-36: 2AH9PC

Squares and roots of 138534240

• 138534240 squared (138534240²) is 19191735652377600
• 138534240 cubed (138534240³) is 2658712512883035009024000
• The square root of 138534240 is 11770.0569242461
• The cube root of 138534240 is 517.4309179881

Scales and comparisons

• 138,534,240 seconds is equal to 4 years, 21 weeks, 9 hours, 44 minutes.
• To count from 1 to 138,534,240 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 138534240 cubic inches would be around 43.1 feet tall.

Recreational maths with 138534240

• 138534240 backwards is 042435831
• 138534240 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138534240's digits is 30
• More coming soon!