129664

129,664 is an even composite number composed of two prime numbers multiplied together.

What does the number 129664 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 16 divisors.

129664 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 129664:

2⁷ × 1013

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 1013)

See below for interesting mathematical facts about the number 129664 from the Numbermatics database.

Names of 129664

Cardinal: 129664 can be written as One hundred twenty-nine thousand, six hundred sixty-four.

Scientific notation

Scientific notation: 1.29664 × 10⁵

Factors of 129664

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 8
Sum of prime factors: 1015

Divisors of 129664

Number of divisors d(n): 16
Complete list of divisors:
1 2 4 8 16 32 64 128 1013 2026 4052 8104 16208 32416 64832 129664
Sum of all divisors σ(n): 258570
Sum of proper divisors (its aliquot sum) s(n): 128906
129664 is a deficient number, because the sum of its proper divisors (128906) is less than itself. Its deficiency is 758

Bases of 129664

Binary: 11111101010000000₂
Hexadecimal: 0x1FA80
Base-36: 2S1S

Squares and roots of 129664

129664 squared (129664²) is 16812752896
129664 cubed (129664³) is 2180008791506944
The square root of 129664 is 360.0888779177
The cube root of 129664 is 50.6142887465

Scales and comparisons

How big is 129664?

129,664 seconds is equal to 1 day, 12 hours, 1 minute, 4 seconds.
To count from 1 to 129,664 would take you about twelve hours.

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 129664 cubic inches would be around 4.2 feet tall.

Recreational maths with 129664

129664 backwards is 466921
The number of decimal digits it has is: 6
The sum of 129664's digits is 28
More coming soon!

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The information we have on file for 129664 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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