The Number

21028

Twenty-One Thousand and Twenty-Eight

In Base 15 Quindecimal Is

636d15

The numbers with a 15 subscript use Base 15 Quindecimal notation.

For more familiar numbers: See Twenty-One Thousand and Twenty-Eight in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21025
636a15
Twenty-One Thousand and Twenty-Five in Base 15 Quindecimal
21026
636b15
Twenty-One Thousand and Twenty-Six in Base 15 Quindecimal
21027
636c15
Twenty-One Thousand and Twenty-Seven in Base 15 Quindecimal
21029
636e15
Twenty-One Thousand and Twenty-Nine in Base 15 Quindecimal
21030
637015
Twenty-One Thousand and Thirty in Base 15 Quindecimal
21031
637115
Twenty-One Thousand and Thirty-One in Base 15 Quindecimal

Scientific Notation

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

2.1028e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000261a4d868d2b3215

The reciprocal of 21028 in Base 15 Quindecimal.

Palindrome?

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

The number 636d15 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 and twenty-eight is a composite number with 12 total factors (including 1 and itself).   See primes in Base 15 Quindecimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand and twenty-eight is a composite number with 12 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 and twenty-eight has the following 3 prime factors:

2
215
Two in Base 15 Quindecimal
7
715
Seven in Base 15 Quindecimal
751
35115
Seven Hundred and Fifty-One in Base 15 Quindecimal

Prime Factorization

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

2152 · 7151 · 351151 = 636d15

Base Conversions

The number twenty-one thousand and twenty-eight in 35 different bases