128536721 (number)

128536721 is an odd 9-digits composite number following 128536720 and preceding 128536722. In scientific notation, it is written as 1.28536721 × 10^8. The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors. There are 126775872 positive integers (up to 128536721) that are relatively prime to 128536721.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million five hundred thirty-six thousand seven hundred twenty-one

Notation

Scientific notation 1.28536721 × 10^8
Engineering notation 1.28536721 × 10^6

Prime Factorization of 128536721

Prime Factorization 73 × 1760777

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128536721
Product of the distinct prime numbers

The prime factorization of 128536721 is 73 × 1760777. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 10, 20, 79, 806, 213, 2135, 8374, 5220, 45986, 651735, 488161, 5374442, 2514006, 66972085, 24509875, 701703500, 461493432, 651521840, 6544670480

Basic calculations (n = 128536721)

Multiplication

n×y
n×2 257073442
n×3 385610163
n×4 514146884
n×5 642683605

Division

n÷y
n÷2 64268360.5
n÷3 42845573.666667
n÷3 32134180.25
n÷5 25707344.2

Exponentiation

ny
n2 16521688645431841
n3 2.1236436838667E+24
n4 2.7296619569659E+32
n5 3.5086179738684E+40

Nth Root

y√n
2√n 11337.403626933
3√n 504.67183986719
4√n 106.47724464379
5√n 41.86059946397

Divisors of 128536721

1, 73, 1760777, 128536721

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 -128536720
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 128536721 can be divided by 4 positive divisors. The sum of these divisors (counting 128536721) is 1, the average is 0.25.

Base conversion 128536721

Base System Value
2 Binary 111101010010101000010010001
3 Ternary 22221212100020022
4 Quaternary 13222111002101
5 Quinary 230401133341
6 Senary 20430553225
8 Octal 752250221
10 Decimal 128536721
12 Duodecimal 37068815
16 Hexadecimal 7a95091
20 Vigesimal 20371g1
36 Base36 24izkh

Cryptographic Hash Functions

md5 93b6d11b9c2c84f2b56ca7328dfd7426
sha1 e6410ac8edbe991a5d986bb0c73d45873fef552d
sha256 9c32401812b890bd30f0911255695784387a28103122573e1afd7f8599e473c6
sha512 903ac84c2f8a38e1072e84b57ecf1da5608efda15dbc08c0071f671ed0c154cd19ff4fe751c2a0c3e85d2025bbd60cbb3316f7690a47171257598378c4ce52ac
ripemd-160 38ca9231bf789c3b8632623ffa1823ada1920531

128536721 as geometric shapes

Circle

Radius = n
Diameter 257073442
Circumference 807620036.82024
Area 5.1904415673387E+16

Sphere

Radius = n
Volume 8.8954978614375E+24
Surface area 2.0761766269355E+17
Circumference 807620036.82024

Square

Length = n
Perimeter 514146884
Area 16521688645431841
Diagonal 181778374.10117

Cube

Length = n
Surface area 99130131872591046
Volume 2.1236436838667E+24
Space diagonal 222632131.41031

Equilateral Triangle

Length = n
Perimeter 385610163
Area 7.1541010401804E+15
Altitude 111316065.70515

Triangular Pyramid

Length = n
Surface area 7.1541010401804E+15
Volume 2.5027380828103E+23
Height 60592791.367056