The Number

81820

Eighty-One Thousand Eight Hundred and Twenty

In Base 12 Duodecimal Is

3b42412

The numbers with a 12 subscript use Base 12 Duodecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81817
3b42112
Eighty-One Thousand Eight Hundred and Seventeen in Base 12 Duodecimal
81818
3b42212
Eighty-One Thousand Eight Hundred and Eightteen in Base 12 Duodecimal
81819
3b42312
Eighty-One Thousand Eight Hundred and Nineteen in Base 12 Duodecimal
81821
3b42512
Eighty-One Thousand Eight Hundred and Twenty-One in Base 12 Duodecimal
81822
3b42612
Eighty-One Thousand Eight Hundred and Twenty-Two in Base 12 Duodecimal
81823
3b42712
Eighty-One Thousand Eight Hundred and Twenty-Three in Base 12 Duodecimal

Scientific Notation

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

8.1820e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000305b26b7521019812

The reciprocal of 81820 in Base 12 Duodecimal.

Palindrome?

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

The number 3b42412 is not a palindrome.

Not A Prime Number

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

Eighty-one thousand eight hundred and twenty is a composite number with 12 total factors (including 1 and itself).   See primes in Base 12 Duodecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand eight hundred and twenty 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 eighty-one thousand eight hundred and twenty has the following 3 prime factors:

2
212
Two in Base 12 Duodecimal
5
512
Five in Base 12 Duodecimal
4091
244b12
Four Thousand and Ninety-One in Base 12 Duodecimal

Prime Factorization

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

2122 · 5121 · 244b121 = 3b42412

Base Conversions

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