The Number

128640

One Hundred and Twenty-Eight Thousand Six Hundred and Forty

Nearby Numbers

Positive, nonzero integers within three units

128637
One Hundred and Twenty-Eight Thousand Six Hundred and Thirty-Seven
128638
One Hundred and Twenty-Eight Thousand Six Hundred and Thirty-Eight
128639
One Hundred and Twenty-Eight Thousand Six Hundred and Thirty-Nine
128641
One Hundred and Twenty-Eight Thousand Six Hundred and Forty-One
128642
One Hundred and Twenty-Eight Thousand Six Hundred and Forty-Two
128643
One Hundred and Twenty-Eight Thousand Six Hundred and Forty-Three

Scientific Notation

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

1.28640e5

Reciprocal

A number multiplied with its reciprocal is one.

0.00000777363184079602

The reciprocal of 128640.

Palindrome?

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

The number 128640 is not a palindrome.

Not A Prime Number

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

One hundred and twenty-eight thousand six hundred and forty is a composite number with 64 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

One hundred and twenty-eight thousand six hundred and forty is a composite number with 64 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 one hundred and twenty-eight thousand six hundred and forty has the following 4 prime factors:

2
Two
3
Three
5
Five
67
Sixty-Seven

Prime Factorization

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

27 · 31 · 51 · 671 = 128640

Base Conversions

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