128124781 (number)

128124781 is an odd 9-digits composite number following 128124780 and preceding 128124782. In scientific notation, it is written as 1.28124781 × 10^8. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 128037472 positive integers (up to 128124781) that are relatively prime to 128124781.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28124781 × 10^8
Engineering notation 1.28124781 × 10^6

Prime Factorization of 128124781

Prime Factorization 1493 × 85817

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128124781
Product of the distinct prime numbers

The prime factorization of 128124781 is 1493 × 85817. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128124781)

Multiplication

n×y
n×2 256249562
n×3 384374343
n×4 512499124
n×5 640623905

Division

n÷y
n÷2 64062390.5
n÷3 42708260.333333
n÷3 32031195.25
n÷5 25624956.2

Exponentiation

ny
n2 16415959506297961
n3 2.1032912166493E+24
n4 2.6948372651241E+32
n5 3.4527543442467E+40

Nth Root

y√n
2√n 11319.221748866
3√n 504.13213157184
4√n 106.39183121305
5√n 41.833733672456

Divisors of 128124781

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 -128124780
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 128124781 can be divided by 4 positive divisors. The sum of these divisors (counting 128124781) is 1, the average is 0.25.

Base conversion 128124781

Base System Value
2 Binary 111101000110000011101101101
3 Ternary 22221002102011021
4 Quaternary 13220300131231
5 Quinary 230244443111
6 Senary 20414054141
8 Octal 750603555
10 Decimal 128124781
12 Duodecimal 36aaa351
16 Hexadecimal 7a3076d
20 Vigesimal 200fbj1
36 Base36 24a5pp

Cryptographic Hash Functions

md5 d75132e6ab806d8ad4c4a77c9eacefa4
sha1 0ba4bdb3d9c8cb327fdd012e0191d78335a4cdf2
sha256 c4559536a87a1da18aa1af3204cd1f65401a09f9e90b5cf8dbd79fcf5fbb772c
sha512 019385a35143f77788972bd50c43f3ec63ce8a29ec9b400ac5ad74603dedc9f6fdd7985c4279a81331a353dcff38ff0664ad390c0c0082b00a45d9ff1f3bf9e6
ripemd-160 ccf33a14a0d74ef2829047ed79a3244abb623a0b

128124781 as geometric shapes

Circle

Radius = n
Diameter 256249562
Circumference 805031741.4648
Area 5.1572257786613E+16

Sphere

Radius = n
Volume 8.8102456461138E+24
Surface area 2.0628903114645E+17
Circumference 805031741.4648

Square

Length = n
Perimeter 512499124
Area 16415959506297961
Diagonal 181195802.96628

Cube

Length = n
Surface area 98495757037787766
Volume 2.1032912166493E+24
Space diagonal 221918630.40064

Equilateral Triangle

Length = n
Perimeter 384374343
Area 7.1083189799753E+15
Altitude 110959315.20032

Triangular Pyramid

Length = n
Surface area 7.1083189799753E+15
Volume 2.4787524701714E+23
Height 60398600.988761