The Number
21988
Twenty-One Thousand Nine Hundred and Eighty-Eight
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.
2.1988e4
Reciprocal
A number multiplied with its reciprocal is one.
0.000045479352374022196
The reciprocal of 21988.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 21988 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 nine hundred and eighty-eight is a composite number with 12 total factors (including 1 and itself). See primes in Base 10 Decimal
A Composite
Composites have more than just these two factors.
Twenty-one thousand nine hundred and eighty-eight is a composite number with 12 total factors (including 1 and itself).
Prime Factors
The number twenty-one thousand nine hundred and eighty-eight has the following 3 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
22
·
231
·
2391
= 21988
Base Conversions
The number twenty-one thousand nine hundred and eighty-eight in 35 different bases