128972642 (number)

128972642 is an even 9-digits composite number following 128972641 and preceding 128972643. In scientific notation, it is written as 1.28972642 × 10^8. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 60692992 positive integers (up to 128972642) that are relatively prime to 128972642.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million nine hundred seventy-two thousand six hundred forty-two

Notation

Scientific notation 1.28972642 × 10^8
Engineering notation 1.28972642 × 10^6

Prime Factorization of 128972642

Prime Factorization 2 × 17 × 3793313

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128972642
Product of the distinct prime numbers

The prime factorization of 128972642 is 2 × 17 × 3793313. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128972642)

Multiplication

n×y
n×2 257945284
n×3 386917926
n×4 515890568
n×5 644863210

Division

n÷y
n÷2 64486321
n÷3 42990880.666667
n÷3 32243160.5
n÷5 25794528.4

Exponentiation

ny
n2 16633942384460164
n3 2.1453234961996E+24
n4 2.7668803924954E+32
n5 3.5685187431813E+40

Nth Root

y√n
2√n 11356.612258944
3√n 505.24171286715
4√n 106.56740711373
5√n 41.888954334096

Divisors of 128972642

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128972641
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128972642 can be divided by 8 positive divisors. The sum of these divisors (counting 128972642) is 1, the average is 0.125.

Base conversion 128972642

Base System Value
2 Binary 111101011111111011101100010
3 Ternary 22222200111012112
4 Quaternary 13223333131202
5 Quinary 231004111032
6 Senary 20444155322
8 Octal 753773542
10 Decimal 128972642
12 Duodecimal 37238b42
16 Hexadecimal 7aff762
20 Vigesimal 2061bc2
36 Base36 24sbxe

Cryptographic Hash Functions

md5 cc0d522e0011fef0f9eae1d68cdfc10d
sha1 79de42f1ec01ec0ce8c8d7e148f06a9fb4ab1386
sha256 af73fa45b0187ca83c8d661c3730d493510b2102f30f05d9ee361f564921aaf2
sha512 5e9085a07cee94c408bd24e2d31a969ad17e5dcdd03a2b4d326e255fc218c512d87eb809f84470c8dea8cfbba82ac159c08b929114b05c8f6059123185ce31d8
ripemd-160 966dbc0acbbce2be084296be15415fd19e1293e9

128972642 as geometric shapes

Circle

Radius = n
Diameter 257945284
Circumference 810359009.24253
Area 5.2257071195256E+16

Sphere

Radius = n
Volume 8.986310046979E+24
Surface area 2.0902828478102E+17
Circumference 810359009.24253

Square

Length = n
Perimeter 515890568
Area 16633942384460164
Diagonal 182394859.49149

Cube

Length = n
Surface area 99803654306760984
Volume 2.1453234961996E+24
Space diagonal 223387168.73039

Equilateral Triangle

Length = n
Perimeter 386917926
Area 7.2027083350146E+15
Altitude 111693584.3652

Triangular Pyramid

Length = n
Surface area 7.2027083350146E+15
Volume 2.5282879866693E+23
Height 60798286.497163