The Number

21008

Twenty-One Thousand and Eight

In Base 18 Octodecimal Is

3af218

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See Twenty-One Thousand and Eight in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21005
3aeh18
Twenty-One Thousand and Five in Base 18 Octodecimal
21006
3af018
Twenty-One Thousand and Six in Base 18 Octodecimal
21007
3af118
Twenty-One Thousand and Seven in Base 18 Octodecimal
21009
3af318
Twenty-One Thousand and Nine in Base 18 Octodecimal
21010
3af418
Twenty-One Thousand and Ten in Base 18 Octodecimal
21011
3af518
Twenty-One Thousand and Eleven in Base 18 Octodecimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.1008e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0004hh043931970b18

The reciprocal of 21008 in Base 18 Octodecimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 3af218 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Twenty-one thousand and eight is a composite number with 20 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand and eight is a composite number with 20 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number twenty-one thousand and eight has the following 3 prime factors:

2
218
Two in Base 18 Octodecimal
13
d18
Thirteen in Base 18 Octodecimal
101
5b18
One Hundred and One in Base 18 Octodecimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

2184 · d181 · 5b181 = 3af218

Base Conversions

The number twenty-one thousand and eight in 35 different bases