129538752

Names of 129538752

• Cardinal: 129538752 can be written as One hundred twenty-nine million, five hundred thirty-eight thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 1.29538752 × 10⁸

Factors of 129538752

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 293

Divisors of 129538752

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 64 84 96 98 112 147 168 192 196 224 281 294 336 343 392 448 562 588 672 686 784 843 1029 1124 1176 1344 1372 1568 1686 1967 2058 2248 2352 2401 2744 3136 3372 3934 4116 4496 4704 4802 5488 5901 6744 7203 7868 8232 8992 9408 9604 10976 11802 13488 13769 14406 15736 16464 17984 19208 21952 23604 26976 27538 28812 31472 32928 38416 41307 47208 53952 55076 57624 62944 65856 76832 82614 94416 96383 110152 115248 125888 153664 165228 188832 192766 220304 230496 289149 330456 377664 385532 440608 460992 578298 660912 674681 771064 881216 1156596 1321824 1349362 1542128 2024043 2313192 2643648 2698724 3084256 4048086 4626384 5397448 6168512 8096172 9252768 10794896 16192344 18505536 21589792 32384688 43179584 64769376 129538752
• Sum of all divisors σ(n): 401260056
• Sum of proper divisors (its aliquot sum) s(n): 271721304
• 129538752 is an abundant number, because the sum of its proper divisors (271721304) is greater than itself. Its abundance is 142182552

Bases of 129538752

• Binary: 111101110001001101011000000₂
• Hexadecimal: 0x7B89AC0
• Base-36: 254GQO

Squares and roots of 129538752

• 129538752 squared (129538752²) is 16780288269717504
• 129538752 cubed (129538752³) is 2173697600659444860715008
• The square root of 129538752 is 11381.5092145111
• The cube root of 129538752 is 505.9798666133

Scales and comparisons

• 129,538,752 seconds is equal to 4 years, 6 weeks, 1 day, 6 hours, 59 minutes, 12 seconds.
• To count from 1 to 129,538,752 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 129538752 cubic inches would be around 42.2 feet tall.

Recreational maths with 129538752

• 129538752 backwards is 257835921
• 129538752 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129538752's digits is 42
• More coming soon!