The Number
81990
Eighty-One Thousand Nine Hundred and Ninety
In Base 14 Quattuordecimal Is
21c4614
The numbers with a 14 subscript use Base 14 Quattuordecimal notation.
For more familiar numbers: See Eighty-One Thousand Nine Hundred and Ninety 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.
8.1990e4
Reciprocal
A number multiplied with its reciprocal is one.
0.000067b98a054b948c14
The reciprocal of 81990 in Base 14 Quattuordecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 21c4614 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Eighty-one thousand nine hundred and ninety is a composite number with 24 total factors (including 1 and itself). See primes in Base 14 Quattuordecimal
A Composite
Composites have more than just these two factors.
Eighty-one thousand nine hundred and ninety is a composite number with 24 total factors (including 1 and itself).
Prime Factors
The number eighty-one thousand nine hundred and ninety has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
2141
·
3142
·
5141
·
491141
= 21c4614
Base Conversions
The number eighty-one thousand nine hundred and ninety in 35 different bases