The Number

987

Nine Hundred and Eighty-Seven

In Base 21 Unovigesimal Is

25021

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

984
24i21
Nine Hundred and Eighty-Four in Base 21 Unovigesimal
985
24j21
Nine Hundred and Eighty-Five in Base 21 Unovigesimal
986
24k21
Nine Hundred and Eighty-Six in Base 21 Unovigesimal
988
25121
Nine Hundred and Eighty-Eight in Base 21 Unovigesimal
989
25221
Nine Hundred and Eighty-Nine in Base 21 Unovigesimal
990
25321
Nine Hundred and Ninety in Base 21 Unovigesimal

Scientific Notation

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

9.87e2

Reciprocal

A number multiplied with its reciprocal is one.

0.00980ig1gb3c1821

The reciprocal of 987 in Base 21 Unovigesimal.

Palindrome?

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

The number 25021 is not a palindrome.

Not A Prime Number

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

Nine hundred and eighty-seven is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Nine hundred and eighty-seven is a composite number with 8 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 nine hundred and eighty-seven has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal
47
2521
Forty-Seven in Base 21 Unovigesimal

Prime Factorization

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

3211 · 7211 · 25211 = 25021

Base Conversions

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