The Number

1220

One Thousand Two Hundred and Twenty

In Base 18 Octodecimal Is

3de18

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See One Thousand Two Hundred and Twenty in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

1217
3db18
One Thousand Two Hundred and Seventeen in Base 18 Octodecimal
1218
3dc18
One Thousand Two Hundred and Eightteen in Base 18 Octodecimal
1219
3dd18
One Thousand Two Hundred and Nineteen in Base 18 Octodecimal
1221
3df18
One Thousand Two Hundred and Twenty-One in Base 18 Octodecimal
1222
3dg18
One Thousand Two Hundred and Twenty-Two in Base 18 Octodecimal
1223
3dh18
One Thousand Two Hundred and Twenty-Three in Base 18 Octodecimal

Scientific Notation

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

1.220e3

Reciprocal

A number multiplied with its reciprocal is one.

0.004e0efca4f1h1118

The reciprocal of 1220 in Base 18 Octodecimal.

Palindrome?

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

The number 3de18 is not a palindrome.

Not A Prime Number

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

One thousand two hundred and twenty is a composite number with 12 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

One thousand two 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 one thousand two hundred and twenty has the following 3 prime factors:

2
218
Two in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal
61
3718
Sixty-One in Base 18 Octodecimal

Prime Factorization

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

2182 · 5181 · 37181 = 3de18

Base Conversions

The number one thousand two hundred and twenty in 35 different bases