The Number

21970

Twenty-One Thousand Nine Hundred and Seventy

In Base 20 Vigesimal Is

2eia20

The numbers with a 20 subscript use Base 20 Vigesimal 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
2ei720
Twenty-One Thousand Nine Hundred and Sixty-Seven in Base 20 Vigesimal
21968
2ei820
Twenty-One Thousand Nine Hundred and Sixty-Eight in Base 20 Vigesimal
21969
2ei920
Twenty-One Thousand Nine Hundred and Sixty-Nine in Base 20 Vigesimal
21971
2eib20
Twenty-One Thousand Nine Hundred and Seventy-One in Base 20 Vigesimal
21972
2eic20
Twenty-One Thousand Nine Hundred and Seventy-Two in Base 20 Vigesimal
21973
2eid20
Twenty-One Thousand Nine Hundred and Seventy-Three in Base 20 Vigesimal

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.

0.00075d1562hhih1420

The reciprocal of 21970 in Base 20 Vigesimal.

Palindrome?

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

The number 2eia20 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 20 Vigesimal

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
220
Two in Base 20 Vigesimal
5
520
Five in Base 20 Vigesimal
13
d20
Thirteen in Base 20 Vigesimal

Prime Factorization

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

2201 · 5201 · d203 = 2eia20

Base Conversions

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