The Number
21690
Twenty-One Thousand Six Hundred and Ninety
In Base 19 Nonadecimal Is
331b19
The numbers with a 19 subscript use Base 19 Nonadecimal notation.
For more familiar numbers: See Twenty-One Thousand Six 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.
2.1690e4
Reciprocal
A number multiplied with its reciprocal is one.
0.000603049d4i766319
The reciprocal of 21690 in Base 19 Nonadecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 331b19 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 six hundred and ninety is a composite number with 24 total factors (including 1 and itself). See primes in Base 19 Nonadecimal
A Composite
Composites have more than just these two factors.
Twenty-one thousand six hundred and ninety is a composite number with 24 total factors (including 1 and itself).
Prime Factors
The number twenty-one thousand six 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
2191
·
3192
·
5191
·
cd191
= 331b19
Base Conversions
The number twenty-one thousand six hundred and ninety in 35 different bases