The Number
128640
One Hundred and Twenty-Eight Thousand Six Hundred and Forty
In Base 7 Septenary Is
10440217
The numbers with a 7 subscript use Base 7 Septenary notation.
For more familiar numbers: See One Hundred and Twenty-Eight Thousand Six Hundred and Forty in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
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.
0.00000062546003321446251247
The reciprocal of 128640 in Base 7 Septenary.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 10440217 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 7 Septenary
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 number one hundred and twenty-eight thousand six hundred and forty has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
277
·
371
·
571
·
12471
= 10440217
Base Conversions
The number one hundred and twenty-eight thousand six hundred and forty in 35 different bases