The Number

21780

Twenty-One Thousand Seven Hundred and Eighty

In Base 9 Nonary Is

327809

The numbers with a 9 subscript use Base 9 Nonary notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21777
327769
Twenty-One Thousand Seven Hundred and Seventy-Seven in Base 9 Nonary
21778
327779
Twenty-One Thousand Seven Hundred and Seventy-Eight in Base 9 Nonary
21779
327789
Twenty-One Thousand Seven Hundred and Seventy-Nine in Base 9 Nonary
21781
327819
Twenty-One Thousand Seven Hundred and Eighty-One in Base 9 Nonary
21782
327829
Twenty-One Thousand Seven Hundred and Eighty-Two in Base 9 Nonary
21783
327839
Twenty-One Thousand Seven Hundred and Eighty-Three in Base 9 Nonary

Scientific Notation

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

2.1780e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00002635381000263538159

The reciprocal of 21780 in Base 9 Nonary.

Palindrome?

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

The number 327809 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand seven hundred and eighty is a composite number with 54 total factors (including 1 and itself).   See primes in Base 9 Nonary

A Composite

Composites have more than just these two factors.

Twenty-one thousand seven hundred and eighty is a composite number with 54 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-one thousand seven hundred and eighty has the following 4 prime factors:

2
29
Two in Base 9 Nonary
3
39
Three in Base 9 Nonary
5
59
Five in Base 9 Nonary
11
129
Eleven in Base 9 Nonary

Prime Factorization

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

292 · 392 · 591 · 1292 = 327809

Base Conversions

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