129451168

Names of 129451168

• Cardinal: 129451168 can be written as One hundred twenty-nine million, four hundred fifty-one thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 1.29451168 × 10⁸

Factors of 129451168

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 618

Divisors of 129451168

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 44 56 77 88 107 112 154 176 214 224 308 352 428 491 616 749 856 982 1177 1232 1498 1712 1964 2354 2464 2996 3424 3437 3928 4708 5401 5992 6874 7856 8239 9416 10802 11984 13748 15712 16478 18832 21604 23968 27496 32956 37664 37807 43208 52537 54992 65912 75614 86416 105074 109984 131824 151228 172832 210148 263648 302456 367759 420296 577907 604912 735518 840592 1155814 1209824 1471036 1681184 2311628 2942072 4045349 4623256 5884144 8090698 9246512 11768288 16181396 18493024 32362792 64725584 129451168
• Sum of all divisors σ(n): 321366528
• Sum of proper divisors (its aliquot sum) s(n): 191915360
• 129451168 is an abundant number, because the sum of its proper divisors (191915360) is greater than itself. Its abundance is 62464192

Bases of 129451168

• Binary: 111101101110100010010100000₂
• Hexadecimal: 0x7B744A0
• Base-36: 252L5S

Squares and roots of 129451168

• 129451168 squared (129451168²) is 16757604896564224
• 129451168 cubed (129451168³) is 2169291526742757983813632
• The square root of 129451168 is 11377.6609195387
• The cube root of 129451168 is 505.8658061969

Scales and comparisons

• 129,451,168 seconds is equal to 4 years, 6 weeks, 6 hours, 39 minutes, 28 seconds.
• To count from 1 to 129,451,168 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 129451168 cubic inches would be around 42.2 feet tall.

Recreational maths with 129451168

• 129451168 backwards is 861154921
• The number of decimal digits it has is: 9
• The sum of 129451168's digits is 37
• More coming soon!