128894387 (number)

128894387 is an odd 9-digits composite number following 128894386 and preceding 128894388. In scientific notation, it is written as 1.28894387 × 10^8. The sum of its digits is 50. It has a total of 3 prime factors and 8 positive divisors. There are 127648224 positive integers (up to 128894387) that are relatively prime to 128894387.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million eight hundred ninety-four thousand three hundred eighty-seven

Notation

Scientific notation 1.28894387 × 10^8
Engineering notation 1.28894387 × 10^6

Prime Factorization of 128894387

Prime Factorization 397 × 149 × 2179

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128894387
Product of the distinct prime numbers

The prime factorization of 128894387 is 397 × 149 × 2179. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128894387)

Multiplication

n×y
n×2 257788774
n×3 386683161
n×4 515577548
n×5 644471935

Division

n÷y
n÷2 64447193.5
n÷3 42964795.666667
n÷3 32223596.75
n÷5 25778877.4

Exponentiation

ny
n2 16613763000105769
n3 2.1414207976619E+24
n4 2.7601712102368E+32
n5 3.5577057615852E+40

Nth Root

y√n
2√n 11353.16638652
3√n 505.13950594712
4√n 106.55123831528
5√n 41.883869820133

Divisors of 128894387

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 -128894386
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 128894387 can be divided by 8 positive divisors. The sum of these divisors (counting 128894387) is 1, the average is 0.125.

Base conversion 128894387

Base System Value
2 Binary 111101011101100010110110011
3 Ternary 22222112111212012
4 Quaternary 13223230112303
5 Quinary 230444110022
6 Senary 20442353135
8 Octal 753542663
10 Decimal 128894387
12 Duodecimal 371bb7ab
16 Hexadecimal 7aec5b3
20 Vigesimal 205bfj7
36 Base36 24qnjn

Cryptographic Hash Functions

md5 7a93ac8ad73784f9fe0580a3ad63cb5f
sha1 d5084b2d83ea69c30121e274cf8ed584ba3f78ce
sha256 4536f9ea5f9944875dd6b5dc0d0a4ffd1360b4002536e1ee64b04ae27523d8f4
sha512 f4c5d810ccac8fe2c96e5822a439a4ceb542746909fdf05491cc91dd6c2e69d5a6f96f25a5e8fd25d2961a92d4b45a2caa9f178235f91d0c93acf7b2f59f4672
ripemd-160 3f62914f9037c3c48bec9c791a078417ad08a412

128894387 as geometric shapes

Circle

Radius = n
Diameter 257788774
Circumference 809867318.57632
Area 5.2193675789614E+16

Sphere

Radius = n
Volume 8.9699624615721E+24
Surface area 2.0877470315846E+17
Circumference 809867318.57632

Square

Length = n
Perimeter 515577548
Area 16613763000105769
Diagonal 182284190.20917

Cube

Length = n
Surface area 99682578000634614
Volume 2.1414207976619E+24
Space diagonal 223251627.09445

Equilateral Triangle

Length = n
Perimeter 386683161
Area 7.1939704052728E+15
Altitude 111625813.54722

Triangular Pyramid

Length = n
Surface area 7.1939704052728E+15
Volume 2.5236886123344E+23
Height 60761396.736389