19729728

19,729,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 19729728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 42 divisors.

19729728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-two divisors.

Prime factorization of 19729728:

2⁶ × 3² × 34253

(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 34253)

See below for interesting mathematical facts about the number 19729728 from the Numbermatics database.

Names of 19729728

Cardinal: 19729728 can be written as Nineteen million, seven hundred twenty-nine thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 1.9729728 × 10⁷

Factors of 19729728

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 9
Sum of prime factors: 34258

Divisors of 19729728

Number of divisors d(n): 42
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 34253 68506 102759 137012 205518 274024 308277 411036 548048 616554 822072 1096096 1233108 1644144 2192192 2466216 3288288 4932432 6576576 9864864 19729728
Sum of all divisors σ(n): 56553354
Sum of proper divisors (its aliquot sum) s(n): 36823626
19729728 is an abundant number, because the sum of its proper divisors (36823626) is greater than itself. Its abundance is 17093898

Bases of 19729728

Binary: 1001011010000110101000000₂
Hexadecimal: 0x12D0D40
Base-36: BQVK0

Squares and roots of 19729728

19729728 squared (19729728²) is 389262166953984
19729728 cubed (19729728³) is 7680036674692692836352
The square root of 19729728 is 4441.8158448995
The cube root of 19729728 is 270.2134936937

Scales and comparisons

How big is 19729728?

19,729,728 seconds is equal to 32 weeks, 4 days, 8 hours, 28 minutes, 48 seconds.
To count from 1 to 19,729,728 would take you about forty-eight weeks!

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 19729728 cubic inches would be around 22.5 feet tall.

Recreational maths with 19729728

19729728 backwards is 82792791
The number of decimal digits it has is: 8
The sum of 19729728's digits is 45
More coming soon!

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The information we have on file for 19729728 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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