21390284

21,390,284 is an even composite number composed of four prime numbers multiplied together.

What does the number 21390284 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

21390284 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21390284:

2² × 17 × 29 × 10847

(2 × 2 × 17 × 29 × 10847)

See below for interesting mathematical facts about the number 21390284 from the Numbermatics database.

Names of 21390284

Cardinal: 21390284 can be written as Twenty-one million, three hundred ninety thousand, two hundred eighty-four.

Scientific notation

Scientific notation: 2.1390284 × 10⁷

Factors of 21390284

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 10895

Divisors of 21390284

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 17 29 34 58 68 116 493 986 1972 10847 21694 43388 184399 314563 368798 629126 737596 1258252 5347571 10695142 21390284
Sum of all divisors σ(n): 41005440
Sum of proper divisors (its aliquot sum) s(n): 19615156
21390284 is a deficient number, because the sum of its proper divisors (19615156) is less than itself. Its deficiency is 1775128

Bases of 21390284

Binary: 1010001100110001111001100₂
Hexadecimal: 0x14663CC
Base-36: CQGUK

Squares and roots of 21390284

21390284 squared (21390284²) is 457544249600656
21390284 cubed (21390284³) is 9787001441524918426304
The square root of 21390284 is 4624.9631349883
The cube root of 21390284 is 277.5910866203

Scales and comparisons

How big is 21390284?

21,390,284 seconds is equal to 35 weeks, 2 days, 13 hours, 44 minutes, 44 seconds.
To count from 1 to 21,390,284 would take you about eight 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 21390284 cubic inches would be around 23.1 feet tall.

Recreational maths with 21390284

21390284 backwards is 48209312
21390284 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21390284's digits is 29
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The information we have on file for 21390284 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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