The Number

81920

Eighty-One Thousand Nine Hundred and Twenty

In Base 36 Hexatrigesimal Is

1r7k36

The numbers with a 36 subscript use Base 36 Hexatrigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81917
1r7h36
Eighty-One Thousand Nine Hundred and Seventeen in Base 36 Hexatrigesimal
81918
1r7i36
Eighty-One Thousand Nine Hundred and Eightteen in Base 36 Hexatrigesimal
81919
1r7j36
Eighty-One Thousand Nine Hundred and Nineteen in Base 36 Hexatrigesimal
81921
1r7l36
Eighty-One Thousand Nine Hundred and Twenty-One in Base 36 Hexatrigesimal
81922
1r7m36
Eighty-One Thousand Nine Hundred and Twenty-Two in Base 36 Hexatrigesimal
81923
1r7n36
Eighty-One Thousand Nine Hundred and Twenty-Three in Base 36 Hexatrigesimal

Scientific Notation

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

8.1920e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000ki41ssssssi36

The reciprocal of 81920 in Base 36 Hexatrigesimal.

Palindrome?

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

The number 1r7k36 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 nine hundred and twenty is a composite number with 30 total factors (including 1 and itself).   See primes in Base 36 Hexatrigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand nine hundred and twenty 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 eighty-one thousand nine hundred and twenty has the following 2 prime factors:

2
236
Two in Base 36 Hexatrigesimal
5
536
Five in Base 36 Hexatrigesimal

Prime Factorization

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

23614 · 5361 = 1r7k36

Base Conversions

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