The Number

16821

Sixteen Thousand Eight Hundred and Twenty-One

In Base 21 Unovigesimal Is

1h3021

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

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

Nearby Numbers

Positive, nonzero integers within three units

16818
1h2i21
Sixteen Thousand Eight Hundred and Eightteen in Base 21 Unovigesimal
16819
1h2j21
Sixteen Thousand Eight Hundred and Nineteen in Base 21 Unovigesimal
16820
1h2k21
Sixteen Thousand Eight Hundred and Twenty in Base 21 Unovigesimal
16822
1h3121
Sixteen Thousand Eight Hundred and Twenty-Two in Base 21 Unovigesimal
16823
1h3221
Sixteen Thousand Eight Hundred and Twenty-Three in Base 21 Unovigesimal
16824
1h3321
Sixteen Thousand Eight Hundred and Twenty-Four in Base 21 Unovigesimal

Scientific Notation

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

1.6821e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000bbgfgkg0jh4f21

The reciprocal of 16821 in Base 21 Unovigesimal.

Palindrome?

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

The number 1h3021 is not a palindrome.

Not A Prime Number

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

Sixteen thousand eight hundred and twenty-one 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.

Sixteen thousand eight hundred and twenty-one 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 sixteen thousand eight hundred and twenty-one has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal
89
4521
Eighty-Nine in Base 21 Unovigesimal

Prime Factorization

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

3213 · 7211 · 45211 = 1h3021

Base Conversions

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