The Number

20989

Twenty Thousand Nine Hundred and Eighty-Nine

Nearby Numbers

Positive, nonzero integers within three units

20986
Twenty Thousand Nine Hundred and Eighty-Six
20987
Twenty Thousand Nine Hundred and Eighty-Seven
20988
Twenty Thousand Nine Hundred and Eighty-Eight
20990
Twenty Thousand Nine Hundred and Ninety
20991
Twenty Thousand Nine Hundred and Ninety-One
20992
Twenty Thousand Nine Hundred and Ninety-Two

Scientific Notation

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

2.0989e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000047644004002096336

The reciprocal of 20989.

Palindrome?

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

The number 20989 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-nine is a composite number with 4 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Twenty thousand nine hundred and eighty-nine 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-nine has the following 2 prime factors:

139
One Hundred and Thirty-Nine
151
One Hundred and Fifty-One

Prime Factorization

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

1391 · 1511 = 20989

Base Conversions

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