The Number

21970

Twenty-One Thousand Nine Hundred and Seventy

In Base 21 Unovigesimal Is

27h421

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

For more familiar numbers: See Twenty-One Thousand Nine Hundred and Seventy in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21967
27h121
Twenty-One Thousand Nine Hundred and Sixty-Seven in Base 21 Unovigesimal
21968
27h221
Twenty-One Thousand Nine Hundred and Sixty-Eight in Base 21 Unovigesimal
21969
27h321
Twenty-One Thousand Nine Hundred and Sixty-Nine in Base 21 Unovigesimal
21971
27h521
Twenty-One Thousand Nine Hundred and Seventy-One in Base 21 Unovigesimal
21972
27h621
Twenty-One Thousand Nine Hundred and Seventy-Two in Base 21 Unovigesimal
21973
27h721
Twenty-One Thousand Nine Hundred and Seventy-Three in Base 21 Unovigesimal

Scientific Notation

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

2.1970e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0008hig99jg6i321

The reciprocal of 21970 in Base 21 Unovigesimal.

Palindrome?

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

The number 27h421 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 seventy is a composite number with 16 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand nine hundred and seventy is a composite number with 16 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-one thousand nine hundred and seventy has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
13
d21
Thirteen in Base 21 Unovigesimal

Prime Factorization

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

2211 · 5211 · d213 = 27h421

Base Conversions

The number twenty-one thousand nine hundred and seventy in 35 different bases