The Number

21998

Twenty-One Thousand Nine Hundred and Ninety-Eight

In Base 8 Octal Is

527568

The numbers with a 8 subscript use Base 8 Octal notation.

For more familiar numbers: See Twenty-One Thousand Nine Hundred and Ninety-Eight in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21995
527538
Twenty-One Thousand Nine Hundred and Ninety-Five in Base 8 Octal
21996
527548
Twenty-One Thousand Nine Hundred and Ninety-Six in Base 8 Octal
21997
527558
Twenty-One Thousand Nine Hundred and Ninety-Seven in Base 8 Octal
21999
527578
Twenty-One Thousand Nine Hundred and Ninety-Nine in Base 8 Octal
22000
527608
Twenty-Two Thousand in Base 8 Octal
22001
527618
Twenty-Two Thousand and One in Base 8 Octal

Scientific Notation

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

2.1998e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000013725270443454524148

The reciprocal of 21998 in Base 8 Octal.

Palindrome?

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

The number 527568 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 nine hundred and ninety-eight is a composite number with 8 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

Twenty-one thousand nine hundred and ninety-eight 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 twenty-one thousand nine hundred and ninety-eight has the following 3 prime factors:

2
28
Two in Base 8 Octal
17
218
Seventeen in Base 8 Octal
647
12078
Six Hundred and Forty-Seven in Base 8 Octal

Prime Factorization

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

281 · 2181 · 120781 = 527568

Base Conversions

The number twenty-one thousand nine hundred and ninety-eight in 35 different bases