The Number

20505

Twenty Thousand Five Hundred and Five

In Base 21 Unovigesimal Is

24a921

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

For more familiar numbers: See Twenty Thousand Five Hundred and Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

20502
24a621
Twenty Thousand Five Hundred and Two in Base 21 Unovigesimal
20503
24a721
Twenty Thousand Five Hundred and Three in Base 21 Unovigesimal
20504
24a821
Twenty Thousand Five Hundred and Four in Base 21 Unovigesimal
20506
24aa21
Twenty Thousand Five Hundred and Six in Base 21 Unovigesimal
20507
24ab21
Twenty Thousand Five Hundred and Seven in Base 21 Unovigesimal
20508
24ac21
Twenty Thousand Five Hundred and Eight in Base 21 Unovigesimal

Scientific Notation

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

2.0505e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0009a3ebd732jfe21

The reciprocal of 20505 in Base 21 Unovigesimal.

Palindrome?

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

The number 24a921 is not a palindrome.

Not A Prime Number

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

Twenty thousand five hundred and five 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.

Twenty thousand five hundred and five 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 twenty thousand five hundred and five has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
1367
32221
One Thousand Three Hundred and Sixty-Seven 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 · 5211 · 322211 = 24a921

Base Conversions

The number twenty thousand five hundred and five in 35 different bases