The Number

18

Eightteen

In Base 28 Octovigesimal Is

i28

The numbers with a 28 subscript use Base 28 Octovigesimal notation.

For more familiar numbers: See Eightteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

15
f28
Fifteen in Base 28 Octovigesimal
16
g28
Sixteen in Base 28 Octovigesimal
17
h28
Seventeen in Base 28 Octovigesimal
19
j28
Nineteen in Base 28 Octovigesimal
20
k28
Twenty in Base 28 Octovigesimal
21
l28
Twenty-One in Base 28 Octovigesimal

Scientific Notation

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

1.8e1

Reciprocal

A number multiplied with its reciprocal is one.

0.1ffffffffffe28

The reciprocal of 18 in Base 28 Octovigesimal.

Palindrome?

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

The number i28 is a palindrome.

Not A Prime Number

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

Eightteen is a composite number with 6 total factors (including 1 and itself).   See primes in Base 28 Octovigesimal

A Composite

Composites have more than just these two factors.

Eightteen is a composite number with 6 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 has the following 2 prime factors:

2
228
Two in Base 28 Octovigesimal
3
328
Three in Base 28 Octovigesimal

Prime Factorization

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

2281 · 3282 = i28

Base Conversions

The number eightteen in 35 different bases