The Number

38991

Thirty-Eight Thousand Nine Hundred and Ninety-One

In Base 21 Unovigesimal Is

448f21

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Thirty-Eight Thousand Nine Hundred and Ninety-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

38988
448c21
Thirty-Eight Thousand Nine Hundred and Eighty-Eight in Base 21 Unovigesimal
38989
448d21
Thirty-Eight Thousand Nine Hundred and Eighty-Nine in Base 21 Unovigesimal
38990
448e21
Thirty-Eight Thousand Nine Hundred and Ninety in Base 21 Unovigesimal
38992
448g21
Thirty-Eight Thousand Nine Hundred and Ninety-Two in Base 21 Unovigesimal
38993
448h21
Thirty-Eight Thousand Nine Hundred and Ninety-Three in Base 21 Unovigesimal
38994
448i21
Thirty-Eight Thousand Nine Hundred and Ninety-Four in Base 21 Unovigesimal

Scientific Notation

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

3.8991e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0004kfd8g034eb521

The reciprocal of 38991 in Base 21 Unovigesimal.

Palindrome?

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

The number 448f21 is not a palindrome.

Not A Prime Number

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

Thirty-eight thousand nine hundred and ninety-one is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Thirty-eight thousand nine hundred and ninety-one is a composite number with 8 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 thirty-eight thousand nine hundred and ninety-one has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
41
1k21
Forty-One in Base 21 Unovigesimal
317
f221
Three Hundred and Seventeen in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

3211 · 1k211 · f2211 = 448f21

Base Conversions

The number thirty-eight thousand nine hundred and ninety-one in 35 different bases