The Number

12816

Twelve Thousand Eight Hundred and Sixteen

In Base 21 Unovigesimal Is

181621

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

For more familiar numbers: See Twelve Thousand Eight Hundred and Sixteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12813
181321
Twelve Thousand Eight Hundred and Thirteen in Base 21 Unovigesimal
12814
181421
Twelve Thousand Eight Hundred and Fourteen in Base 21 Unovigesimal
12815
181521
Twelve Thousand Eight Hundred and Fifteen in Base 21 Unovigesimal
12817
181721
Twelve Thousand Eight Hundred and Seventeen in Base 21 Unovigesimal
12818
181821
Twelve Thousand Eight Hundred and Eightteen in Base 21 Unovigesimal
12819
181921
Twelve Thousand Eight Hundred and Nineteen in Base 21 Unovigesimal

Scientific Notation

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

1.2816e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000f3e27i17gh7b21

The reciprocal of 12816 in Base 21 Unovigesimal.

Palindrome?

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

The number 181621 is not a palindrome.

Not A Prime Number

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

Twelve thousand eight hundred and sixteen is a composite number with 30 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Twelve thousand eight hundred and sixteen is a composite number with 30 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 twelve thousand eight hundred and sixteen has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
3
321
Three 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

2214 · 3212 · 45211 = 181621

Base Conversions

The number twelve thousand eight hundred and sixteen in 35 different bases