The Number

12987

Twelve Thousand Nine Hundred and Eighty-Seven

In Base 18 Octodecimal Is

241918

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

For more familiar numbers: See Twelve Thousand Nine Hundred and Eighty-Seven in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12984
241618
Twelve Thousand Nine Hundred and Eighty-Four in Base 18 Octodecimal
12985
241718
Twelve Thousand Nine Hundred and Eighty-Five in Base 18 Octodecimal
12986
241818
Twelve Thousand Nine Hundred and Eighty-Six in Base 18 Octodecimal
12988
241a18
Twelve Thousand Nine Hundred and Eighty-Eight in Base 18 Octodecimal
12989
241b18
Twelve Thousand Nine Hundred and Eighty-Nine in Base 18 Octodecimal
12990
241c18
Twelve Thousand Nine Hundred and Ninety in Base 18 Octodecimal

Scientific Notation

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

1.2987e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000818gheb6dga7618

The reciprocal of 12987 in Base 18 Octodecimal.

Palindrome?

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

The number 241918 is not a palindrome.

Not A Prime Number

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

Twelve thousand nine hundred and eighty-seven is a composite number with 16 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Twelve thousand nine hundred and eighty-seven is a composite number with 16 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 twelve thousand nine hundred and eighty-seven has the following 3 prime factors:

3
318
Three in Base 18 Octodecimal
13
d18
Thirteen in Base 18 Octodecimal
37
2118
Thirty-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

3183 · d181 · 21181 = 241918

Base Conversions

The number twelve thousand nine hundred and eighty-seven in 35 different bases