The Number

21028

Twenty-One Thousand and Twenty-Eight

In Base 2 Binary Is

1010010001001002

The numbers with a 2 subscript use Base 2 Binary 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
1010010001000012
Twenty-One Thousand and Twenty-Five in Base 2 Binary
21026
1010010001000102
Twenty-One Thousand and Twenty-Six in Base 2 Binary
21027
1010010001000112
Twenty-One Thousand and Twenty-Seven in Base 2 Binary
21029
1010010001001012
Twenty-One Thousand and Twenty-Nine in Base 2 Binary
21030
1010010001001102
Twenty-One Thousand and Thirty in Base 2 Binary
21031
1010010001001112
Twenty-One Thousand and Thirty-One in Base 2 Binary

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.

0.00000000000000110001110111011001111010110100000101001101011110100012

The reciprocal of 21028 in Base 2 Binary.

Palindrome?

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

The number 1010010001001002 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 2 Binary

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
102
Two in Base 2 Binary
7
1112
Seven in Base 2 Binary
751
10111011112
Seven Hundred and Fifty-One in Base 2 Binary

Prime Factorization

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

1022 · 11121 · 101110111121 = 1010010001001002

Base Conversions

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