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21007

Number 21007: Properties, Factors, and Mathematical Facts

Short answer

The number 21007 is an odd composite number with 4 positive divisors. Its prime factorization is 7 × 3001. It is also a deficient number, which gives it several notable mathematical relationships.

Is 21007 prime?

ClassificationCompositeParityOddDivisor count4AbundanceDeficient

What is the prime factorization of 21007?

Prime factorization

21007 =
7 times 3001
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What are the divisors of 21007?

Divisor count

4

Divisor sum

24,016

Proper divisor sum

3,009
  • 1
  • 7
  • 3001
  • 21007
Learn more →Learn more →

How is 21007 classified?

Prime

CompositeLearn more →

Perfect square

No

Perfect cube

No

Fibonacci

No

Triangular

No

Power of two

No
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How is 21007 represented in other numeral systems?

Decimal

21007

Binary

101001000001111
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Octal

51017

Hexadecimal

520F
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Roman

No conventional Roman numeral

In words

twenty one thousand seven

Roots and powers

Square root

144.937918 Approximate

Cube root

27.592307 Approximate

Nearest lower square

20736

Nearest higher square

21025

Nearest lower cube

19683

Nearest higher cube

21952

What are the digit properties of 21007?

Digit count

5

Digit sum

10Learn more →

Digit product

0

Digital root

1

Reversed number

70012

Which numbers are related to 21007?

21006· Previous21008· Next21001· Previous prime21011· Next prime7· Prime factor3001· Prime factor20736· Lower square21025· Higher square20910· Previous triangular21115· Next triangular42014· Double70012· Reverse

Why these results are true

  • 21007 is composite because it has positive divisors other than 1 and itself.

Compare this number

FAQ for 21007

Is 21007 prime?
No
What is the prime factorization of 21007?
7 × 3001
Is 21007 a perfect square?
No
What is 21007 in binary?
101001000001111

Read calculation methodology