The Number

128009

One Hundred and Twenty-Eight Thousand and Nine

In Base 18 Octodecimal Is

13h1b18

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

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

Nearby Numbers

Positive, nonzero integers within three units

128006
13h1818
One Hundred and Twenty-Eight Thousand and Six in Base 18 Octodecimal
128007
13h1918
One Hundred and Twenty-Eight Thousand and Seven in Base 18 Octodecimal
128008
13h1a18
One Hundred and Twenty-Eight Thousand and Eight in Base 18 Octodecimal
128010
13h1c18
One Hundred and Twenty-Eight Thousand and Ten in Base 18 Octodecimal
128011
13h1d18
One Hundred and Twenty-Eight Thousand and Eleven in Base 18 Octodecimal
128012
13h1e18
One Hundred and Twenty-Eight Thousand and Twelve in Base 18 Octodecimal

Scientific Notation

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

1.28009e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000edcb7009b0b1818

The reciprocal of 128009 in Base 18 Octodecimal.

Palindrome?

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

The number 13h1b18 is not a palindrome.

Not A Prime Number

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

One hundred and twenty-eight thousand and nine is a composite number with 4 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

One hundred and twenty-eight thousand and nine is a composite number with 4 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 one hundred and twenty-eight thousand and nine has the following 2 prime factors:

7
718
Seven in Base 18 Octodecimal
18287
327h18
Eightteen Thousand Two Hundred and Eighty-Seven in Base 18 Octodecimal

Prime Factorization

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

7181 · 327h181 = 13h1b18

Base Conversions

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