128950987 (number)

128950987 is an odd 9-digits composite number following 128950986 and preceding 128950988. In scientific notation, it is written as 1.28950987 × 10^8. The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors. There are 117228160 positive integers (up to 128950987) that are relatively prime to 128950987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28950987 × 10^8
Engineering notation 1.28950987 × 10^6

Prime Factorization of 128950987

Prime Factorization 11 × 11722817

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128950987
Product of the distinct prime numbers

The prime factorization of 128950987 is 11 × 11722817. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128950987)

Multiplication

n×y
n×2 257901974
n×3 386852961
n×4 515803948
n×5 644754935

Division

n÷y
n÷2 64475493.5
n÷3 42983662.333333
n÷3 32237746.75
n÷5 25790197.4

Exponentiation

ny
n2 16628357048274169
n3 2.1442430535634E+24
n4 2.7650225812489E+32
n5 3.5655239092933E+40

Nth Root

y√n
2√n 11355.658809598
3√n 505.21343394555
4√n 106.56293356321
5√n 41.887547576475

Divisors of 128950987

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 -128950986
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 128950987 can be divided by 4 positive divisors. The sum of these divisors (counting 128950987) is 1, the average is 0.25.

Base conversion 128950987

Base System Value
2 Binary 111101011111010001011001011
3 Ternary 22222122101111111
4 Quaternary 13223322023023
5 Quinary 231002412422
6 Senary 20443511151
8 Octal 753721313
10 Decimal 128950987
12 Duodecimal 372284b7
16 Hexadecimal 7afa2cb
20 Vigesimal 205ih97
36 Base36 24rv7v

Cryptographic Hash Functions

md5 b58cab65698e722a18e7af8d49cdb9c0
sha1 1ba78a93adf014909d511b631cc3e79e5646a951
sha256 bd58d1e27024f93dc789e66277dace58346b4a71be3c3e34966d0bf980ce75fb
sha512 8ab39b6e8745f412f36377e0957ca060e529ee22d13fffc5f54f2785295f881eceb438cd066daa31aa36fb8a127e95ee3338004ae9aa54ea864b2a494b76eacf
ripemd-160 4b28dbf5dd371872657c5f7325b854b94bcd619f

128950987 as geometric shapes

Circle

Radius = n
Diameter 257901974
Circumference 810222946.86471
Area 5.2239524344126E+16

Sphere

Radius = n
Volume 8.9817842994475E+24
Surface area 2.089580973765E+17
Circumference 810222946.86471

Square

Length = n
Perimeter 515803948
Area 16628357048274169
Diagonal 182364234.6968

Cube

Length = n
Surface area 99770142289645014
Volume 2.1442430535634E+24
Space diagonal 223349661.17015

Equilateral Triangle

Length = n
Perimeter 386852961
Area 7.2002898135017E+15
Altitude 111674830.58508

Triangular Pyramid

Length = n
Surface area 7.2002898135017E+15
Volume 2.5270146728113E+23
Height 60788078.232266