121290728

121,290,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 121290728 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

121290728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 121290728:

2³ × 13 × 1033 × 1129

(2 × 2 × 2 × 13 × 1033 × 1129)

See below for interesting mathematical facts about the number 121290728 from the Numbermatics database.

Names of 121290728

Cardinal: 121290728 can be written as One hundred twenty-one million, two hundred ninety thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 1.21290728 × 10⁸

Factors of 121290728

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 2177

Divisors of 121290728

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 8 13 26 52 104 1033 1129 2066 2258 4132 4516 8264 9032 13429 14677 26858 29354 53716 58708 107432 117416 1166257 2332514 4665028 9330056 15161341 30322682 60645364 121290728
Sum of all divisors σ(n): 245368200
Sum of proper divisors (its aliquot sum) s(n): 124077472
121290728 is an abundant number, because the sum of its proper divisors (124077472) is greater than itself. Its abundance is 2786744

Bases of 121290728

Binary: 111001110101011111111101000₂
Hexadecimal: 0x73ABFE8
Base-36: 207OIW

Squares and roots of 121290728

121290728 squared (121290728²) is 14711440698769984
121290728 cubed (121290728³) is 1784361352282640063908352
The square root of 121290728 is 11013.2069807119
The cube root of 121290728 is 495.0045613973

Scales and comparisons

How big is 121290728?

121,290,728 seconds is equal to 3 years, 44 weeks, 3 days, 19 hours, 52 minutes, 8 seconds.
To count from 1 to 121,290,728 would take you about five 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 121290728 cubic inches would be around 41.3 feet tall.

Recreational maths with 121290728

121290728 backwards is 827092121
The number of decimal digits it has is: 9
The sum of 121290728's digits is 32
More coming soon!

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The information we have on file for 121290728 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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