The Number

21428

Twenty-One Thousand Four Hundred and Twenty-Eight

In Base 11 Undecimal Is

1511011

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21425
1510811
Twenty-One Thousand Four Hundred and Twenty-Five in Base 11 Undecimal
21426
1510911
Twenty-One Thousand Four Hundred and Twenty-Six in Base 11 Undecimal
21427
1510a11
Twenty-One Thousand Four Hundred and Twenty-Seven in Base 11 Undecimal
21429
1511111
Twenty-One Thousand Four Hundred and Twenty-Nine in Base 11 Undecimal
21430
1511211
Twenty-One Thousand Four Hundred and Thirty in Base 11 Undecimal
21431
1511311
Twenty-One Thousand Four Hundred and Thirty-One in Base 11 Undecimal

Scientific Notation

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

2.1428e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000075747547687a70a811

The reciprocal of 21428 in Base 11 Undecimal.

Palindrome?

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

The number 1511011 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 four hundred and twenty-eight is a composite number with 12 total factors (including 1 and itself).   See primes in Base 11 Undecimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand four hundred and twenty-eight is a composite number with 12 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 four hundred and twenty-eight has the following 3 prime factors:

2
211
Two in Base 11 Undecimal
11
1011
Eleven in Base 11 Undecimal
487
40311
Four Hundred and Eighty-Seven in Base 11 Undecimal

Prime Factorization

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

2112 · 10111 · 403111 = 1511011

Base Conversions

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