128675981 (number)

128675981 is an odd 9-digits composite number following 128675980 and preceding 128675982. In scientific notation, it is written as 1.28675981 × 10^8. The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors. There are 110293692 positive integers (up to 128675981) that are relatively prime to 128675981.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million six hundred seventy-five thousand nine hundred eighty-one

Notation

Scientific notation 1.28675981 × 10^8
Engineering notation 1.28675981 × 10^6

Prime Factorization of 128675981

Prime Factorization 7 × 18382283

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128675981
Product of the distinct prime numbers

The prime factorization of 128675981 is 7 × 18382283. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128675981)

Multiplication

n×y
n×2 257351962
n×3 386027943
n×4 514703924
n×5 643379905

Division

n÷y
n÷2 64337990.5
n÷3 42891993.666667
n÷3 32168995.25
n÷5 25735196.2

Exponentiation

ny
n2 16557508086312361
n3 2.1305535959217E+24
n4 2.741510740283E+32
n5 3.5276658392795E+40

Nth Root

y√n
2√n 11343.543582144
3√n 504.85403224996
4√n 106.50607298245
5√n 41.869666106314

Divisors of 128675981

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128675980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128675981 can be divided by 4 positive divisors. The sum of these divisors (counting 128675981) is 1, the average is 0.25.

Base conversion 128675981

Base System Value
2 Binary 111101010110111000010001101
3 Ternary 22222010102021002
4 Quaternary 13222313002031
5 Quinary 230420112411
6 Senary 20433550045
8 Octal 752670215
10 Decimal 128675981
12 Duodecimal 37115325
16 Hexadecimal 7ab708d
20 Vigesimal 20449j1
36 Base36 24lz0t

Cryptographic Hash Functions

md5 86096925101c86e5987fca9fe2038318
sha1 87dedc2488fdc7979203e8d099918b9775027e67
sha256 9cd7cb305bbe53d6287d51bab9371d5442c749eb91604d4ba31b59321e023bd6
sha512 75032cf7ed2df0485b2c5c676ba051635a1e847fb73bab6c444889a0afdce5ce676c99a97e931a1e89eef3fce9716dd4cbf651b532f66fd075e4ba351a195cac
ripemd-160 6ee1f34561bd1aaef607a7645421bc75e274674c

128675981 as geometric shapes

Circle

Radius = n
Diameter 257351962
Circumference 808495033.20612
Area 5.2016945765713E+16

Sphere

Radius = n
Volume 8.9244420333691E+24
Surface area 2.0806778306285E+17
Circumference 808495033.20612

Square

Length = n
Perimeter 514703924
Area 16557508086312361
Diagonal 181975317.48186

Cube

Length = n
Surface area 99345048517874166
Volume 2.1305535959217E+24
Space diagonal 222873336.80577

Equilateral Triangle

Length = n
Perimeter 386027943
Area 7.1696113130564E+15
Altitude 111436668.40288

Triangular Pyramid

Length = n
Surface area 7.1696113130564E+15
Volume 2.5108814922627E+23
Height 60658439.160621