128540891 (number)

128540891 is an odd 9-digits composite number following 128540890 and preceding 128540892. In scientific notation, it is written as 1.28540891 × 10^8. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 127528632 positive integers (up to 128540891) that are relatively prime to 128540891.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million five hundred forty thousand eight hundred ninety-one

Notation

Scientific notation 1.28540891 × 10^8
Engineering notation 1.28540891 × 10^6

Prime Factorization of 128540891

Prime Factorization 127 × 1012133

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128540891
Product of the distinct prime numbers

The prime factorization of 128540891 is 127 × 1012133. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 4, 84, 89, 232, 168, 3738, 1201, 77629, 28145, 312578, 509584, 9049552, 7153614, 69495090, 51430110, 269969260, 250968452, 3294925386, 6147204978

Basic calculations (n = 128540891)

Multiplication

n×y
n×2 257081782
n×3 385622673
n×4 514163564
n×5 642704455

Division

n÷y
n÷2 64270445.5
n÷3 42846963.666667
n÷3 32135222.75
n÷5 25708178.2

Exponentiation

ny
n2 16522760659073881
n3 2.1238503768971E+24
n4 2.7300161979704E+32
n5 3.5091871453155E+40

Nth Root

y√n
2√n 11337.587529982
3√n 504.67729734476
4√n 106.4781082194
5√n 41.860871069521

Divisors of 128540891

1, 127, 1012133, 128540891

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 -128540890
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 128540891 can be divided by 4 positive divisors. The sum of these divisors (counting 128540891) is 1, the average is 0.25.

Base conversion 128540891

Base System Value
2 Binary 111101010010110000011011011
3 Ternary 22221212112221202
4 Quaternary 13222112003123
5 Quinary 230401302031
6 Senary 20431024415
8 Octal 752260333
10 Decimal 128540891
12 Duodecimal 3706b10b
16 Hexadecimal 7a960db
20 Vigesimal 2037c4b
36 Base36 24j2sb

Cryptographic Hash Functions

md5 8f84c2597ee984da30b17a9cf417858a
sha1 13bab25ea54942b7bbb4c0a5aec179a2cde1c2ef
sha256 fe31dccb01ba4ee172996ea8a9940a3aa94627294bba2764d8391bf3bdf65e29
sha512 399363ea501216a1cd8f3c19fcfb869a764607331f13908bf20145175d160d5210275d901f1bcd9fb81b1be1a2eaa6f3196feb23fef0c820660308dcf082eb97
ripemd-160 57d7cb74971752af88ae5a46dc300766fa2cad39

128540891 as geometric shapes

Circle

Radius = n
Diameter 257081782
Circumference 807646237.70297
Area 5.1907783503569E+16

Sphere

Radius = n
Volume 8.8963636551785E+24
Surface area 2.0763113401428E+17
Circumference 807646237.70297

Square

Length = n
Perimeter 514163564
Area 16522760659073881
Diagonal 181784271.37172

Cube

Length = n
Surface area 99136563954443286
Volume 2.1238503768971E+24
Space diagonal 222639354.06217

Equilateral Triangle

Length = n
Perimeter 385622673
Area 7.154565235704E+15
Altitude 111319677.03109

Triangular Pyramid

Length = n
Surface area 7.154565235704E+15
Volume 2.5029816728826E+23
Height 60594757.123907