The Number
128987
One Hundred and Twenty-Eight Thousand Nine Hundred and Eighty-Seven
In Base 18 Octodecimal Is
1421h18
The numbers with a 18 subscript use Base 18 Octodecimal notation.
For more familiar numbers: See One Hundred and Twenty-Eight Thousand Nine Hundred and Eighty-Seven in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
1.28987e5
Reciprocal
A number multiplied with its reciprocal is one.
0.0000ebc6bg10b3ff218
The reciprocal of 128987 in Base 18 Octodecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 1421h18 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 nine hundred and eighty-seven is a composite number with 2 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 nine hundred and eighty-seven is a composite number with 2 total factors (including 1 and itself).
Prime Factors
The number one hundred and twenty-eight thousand nine hundred and eighty-seven has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
1421h181
= 1421h18
Base Conversions
The number one hundred and twenty-eight thousand nine hundred and eighty-seven in 35 different bases