128127981 (number)

128127981 is an odd 9-digits composite number following 128127980 and preceding 128127982. In scientific notation, it is written as 1.28127981 × 10^8. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 85418652 positive integers (up to 128127981) that are relatively prime to 128127981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28127981 × 10^8
Engineering notation 1.28127981 × 10^6

Prime Factorization of 128127981

Prime Factorization 3 × 42709327

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128127981
Product of the distinct prime numbers

The prime factorization of 128127981 is 3 × 42709327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128127981)

Multiplication

n×y
n×2 256255962
n×3 384383943
n×4 512511924
n×5 640639905

Division

n÷y
n÷2 64063990.5
n÷3 42709327
n÷3 32031995.25
n÷5 25625596.2

Exponentiation

ny
n2 16416779515136361
n3 2.1034488137966E+24
n4 2.695106496486E+32
n5 3.4531855397474E+40

Nth Root

y√n
2√n 11319.363100458
3√n 504.13632854654
4√n 106.39249550818
5√n 41.833942635327

Divisors of 128127981

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 -128127980
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 128127981 can be divided by 4 positive divisors. The sum of these divisors (counting 128127981) is 1, the average is 0.25.

Base conversion 128127981

Base System Value
2 Binary 111101000110001001111101101
3 Ternary 22221002120112210
4 Quaternary 13220301033231
5 Quinary 230300043411
6 Senary 20414121033
8 Octal 750611755
10 Decimal 128127981
12 Duodecimal 36ab0179
16 Hexadecimal 7a313ed
20 Vigesimal 200fjj1
36 Base36 24a86l

Cryptographic Hash Functions

md5 62b2f4ba0e57254633ae4b6bad34db35
sha1 4bbb4bf8466df0e935fd1af58cd923dc199e3d58
sha256 a3635f2c1b29237d30633ba69cc8d88357554b51f5ef45d324a2d0c8a9242915
sha512 6fcb4473ba1fb46a12b093bab139687f5b59f1b67d64dfa4eb701c4375cce34c845dcdfcbe2b596c4dc93ec224a76de9073cec2d716d07a547eb6ae0f12b1c56
ripemd-160 1f2914b5a86c7113d336841934aa45e4f44f6e00

128127981 as geometric shapes

Circle

Radius = n
Diameter 256255962
Circumference 805051847.65779
Area 5.1574833920356E+16

Sphere

Radius = n
Volume 8.8109057875007E+24
Surface area 2.0629933568142E+17
Circumference 805051847.65779

Square

Length = n
Perimeter 512511924
Area 16416779515136361
Diagonal 181200328.44968

Cube

Length = n
Surface area 98500677090818166
Volume 2.1034488137966E+24
Space diagonal 221924172.96322

Equilateral Triangle

Length = n
Perimeter 384383943
Area 7.108674054218E+15
Altitude 110962086.48161

Triangular Pyramid

Length = n
Surface area 7.108674054218E+15
Volume 2.4789382001906E+23
Height 60400109.483227