The Number

18720

Eightteen Thousand Seven Hundred and Twenty

In Base 13 Tridecimal Is

86a013

The numbers with a 13 subscript use Base 13 Tridecimal notation.

For more familiar numbers: See Eightteen Thousand Seven Hundred and Twenty in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

18717
869a13
Eightteen Thousand Seven Hundred and Seventeen in Base 13 Tridecimal
18718
869b13
Eightteen Thousand Seven Hundred and Eightteen in Base 13 Tridecimal
18719
869c13
Eightteen Thousand Seven Hundred and Nineteen in Base 13 Tridecimal
18721
86a113
Eightteen Thousand Seven Hundred and Twenty-One in Base 13 Tridecimal
18722
86a213
Eightteen Thousand Seven Hundred and Twenty-Two in Base 13 Tridecimal
18723
86a313
Eightteen Thousand Seven Hundred and Twenty-Three in Base 13 Tridecimal

Scientific Notation

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

1.8720e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00016aac488a26680513

The reciprocal of 18720 in Base 13 Tridecimal.

Palindrome?

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

The number 86a013 is not a palindrome.

Not A Prime Number

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

Eightteen thousand seven hundred and twenty is a composite number with 72 total factors (including 1 and itself).   See primes in Base 13 Tridecimal

A Composite

Composites have more than just these two factors.

Eightteen thousand seven hundred and twenty is a composite number with 72 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 eightteen thousand seven hundred and twenty has the following 4 prime factors:

2
213
Two in Base 13 Tridecimal
3
313
Three in Base 13 Tridecimal
5
513
Five in Base 13 Tridecimal
13
1013
Thirteen in Base 13 Tridecimal

Prime Factorization

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

2135 · 3132 · 5131 · 10131 = 86a013

Base Conversions

The number eightteen thousand seven hundred and twenty in 35 different bases