128702981 (number)

128702981 is an odd 9-digits composite number following 128702980 and preceding 128702982. In scientific notation, it is written as 1.28702981 × 10^8. The sum of its digits is 38. It has a total of 3 prime factors and 6 positive divisors. There are 117002600 positive integers (up to 128702981) that are relatively prime to 128702981.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million seven hundred two thousand nine hundred eighty-one

Notation

Scientific notation 1.28702981 × 10^8
Engineering notation 1.28702981 × 10^6

Prime Factorization of 128702981

Prime Factorization 11 × 11 × 1063661

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 11700271
Product of the distinct prime numbers

The prime factorization of 128702981 is 11 × 11 × 1063661. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128702981)

Multiplication

n×y
n×2 257405962
n×3 386108943
n×4 514811924
n×5 643514905

Division

n÷y
n÷2 64351490.5
n÷3 42900993.666667
n÷3 32175745.25
n÷5 25740596.2

Exponentiation

ny
n2 16564457318286361
n3 2.1318950355107E+24
n4 2.7438124624933E+32
n5 3.5313684322784E+40

Nth Root

y√n
2√n 11344.733624021
3√n 504.88934084828
4√n 106.51165956843
5√n 41.871423055987

Divisors of 128702981

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128702980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128702981 can be divided by 6 positive divisors. The sum of these divisors (counting 128702981) is 1, the average is 0.16666666666667.

Base conversion 128702981

Base System Value
2 Binary 111101010111101101000000101
3 Ternary 22222011210022002
4 Quaternary 13222331220011
5 Quinary 230421443411
6 Senary 20434315045
8 Octal 752755005
10 Decimal 128702981
12 Duodecimal 37128a85
16 Hexadecimal 7abda05
20 Vigesimal 2047h91
36 Base36 24mjut

Cryptographic Hash Functions

md5 27524897c688374525ad6274f4ca8ba2
sha1 5c94f28f24d76e93bb586140f27e754210d2ecc3
sha256 84d019ada27119873ba4f7d08f5edc7b459b5baf7a28806cf21cf1aa48f9077d
sha512 151347d8bb31988ca6886e4a9e9afe9b80305a7d87f7e48aedcd72c42738bf66f01c2dac45ef46f7f3cc4aff7383a74d2cd9df408d12d7445e7cf1e97cba6c91
ripemd-160 cbbf331fa94cba69f931961760e416c9d45104a6

128702981 as geometric shapes

Circle

Radius = n
Diameter 257405962
Circumference 808664679.20941
Area 5.203877742183E+16

Sphere

Radius = n
Volume 8.93006104238E+24
Surface area 2.0815510968732E+17
Circumference 808664679.20941

Square

Length = n
Perimeter 514811924
Area 16564457318286361
Diagonal 182013501.24805

Cube

Length = n
Surface area 99386743909718166
Volume 2.1318950355107E+24
Space diagonal 222920102.17757

Equilateral Triangle

Length = n
Perimeter 386108943
Area 7.1726204187695E+15
Altitude 111460051.08879

Triangular Pyramid

Length = n
Surface area 7.1726204187695E+15
Volume 2.5124623939793E+23
Height 60671167.082682