21387152

21,387,152 is an even composite number composed of three prime numbers multiplied together.

What does the number 21387152 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

21387152 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 21387152:

2⁴ × 29 × 46093

(2 × 2 × 2 × 2 × 29 × 46093)

See below for interesting mathematical facts about the number 21387152 from the Numbermatics database.

Names of 21387152

Cardinal: 21387152 can be written as Twenty-one million, three hundred eighty-seven thousand, one hundred fifty-two.

Scientific notation

Scientific notation: 2.1387152 × 10⁷

Factors of 21387152

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 46124

Divisors of 21387152

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 8 16 29 58 116 232 464 46093 92186 184372 368744 737488 1336697 2673394 5346788 10693576 21387152
Sum of all divisors σ(n): 42867420
Sum of proper divisors (its aliquot sum) s(n): 21480268
21387152 is an abundant number, because the sum of its proper divisors (21480268) is greater than itself. Its abundance is 93116

Bases of 21387152

Binary: 1010001100101011110010000₂
Hexadecimal: 0x1465790
Base-36: CQEFK

Squares and roots of 21387152

21387152 squared (21387152²) is 457410270671104
21387152 cubed (21387152³) is 9782702985204043255808
The square root of 21387152 is 4624.6245252995
The cube root of 21387152 is 277.5775375137

Scales and comparisons

How big is 21387152?

21,387,152 seconds is equal to 35 weeks, 2 days, 12 hours, 52 minutes, 32 seconds.
To count from 1 to 21,387,152 would take you about seven 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 21387152 cubic inches would be around 23.1 feet tall.

Recreational maths with 21387152

21387152 backwards is 25178312
21387152 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21387152's digits is 29
More coming soon!

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The information we have on file for 21387152 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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