The Number

20987

Twenty Thousand Nine Hundred and Eighty-Seven

In Base 19 Nonadecimal Is

312b19

The numbers with a 19 subscript use Base 19 Nonadecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

20984
312819
Twenty Thousand Nine Hundred and Eighty-Four in Base 19 Nonadecimal
20985
312919
Twenty Thousand Nine Hundred and Eighty-Five in Base 19 Nonadecimal
20986
312a19
Twenty Thousand Nine Hundred and Eighty-Six in Base 19 Nonadecimal
20988
312c19
Twenty Thousand Nine Hundred and Eighty-Eight in Base 19 Nonadecimal
20989
312d19
Twenty Thousand Nine Hundred and Eighty-Nine in Base 19 Nonadecimal
20990
312e19
Twenty Thousand Nine Hundred and Ninety in Base 19 Nonadecimal

Scientific Notation

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

2.0987e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00063icd117hf4be19

The reciprocal of 20987 in Base 19 Nonadecimal.

Palindrome?

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

The number 312b19 is not a palindrome.

Not A Prime Number

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

Twenty thousand nine hundred and eighty-seven is a composite number with 4 total factors (including 1 and itself).   See primes in Base 19 Nonadecimal

A Composite

Composites have more than just these two factors.

Twenty thousand nine hundred and eighty-seven is a composite number with 4 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 twenty thousand nine hundred and eighty-seven has the following 2 prime factors:

31
1c19
Thirty-One in Base 19 Nonadecimal
677
1gc19
Six Hundred and Seventy-Seven in Base 19 Nonadecimal

Prime Factorization

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

1c191 · 1gc191 = 312b19

Base Conversions

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