128564721 (number)

128564721 is an odd 9-digits composite number following 128564720 and preceding 128564722. In scientific notation, it is written as 1.28564721 × 10^8. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 85468920 positive integers (up to 128564721) that are relatively prime to 128564721.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million five hundred sixty-four thousand seven hundred twenty-one

Notation

Scientific notation 1.28564721 × 10^8
Engineering notation 1.28564721 × 10^6

Prime Factorization of 128564721

Prime Factorization 9 × 359 × 39791

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128564721
Product of the distinct prime numbers

The prime factorization of 128564721 is 9 × 359 × 39791. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128564721)

Multiplication

n×y
n×2 257129442
n×3 385694163
n×4 514258884
n×5 642823605

Division

n÷y
n÷2 64282360.5
n÷3 42854907
n÷3 32141180.25
n÷5 25712944.2

Exponentiation

ny
n2 16528887485807841
n3 2.1250318080533E+24
n4 2.732041215185E+32
n5 3.5124411659075E+40

Nth Root

y√n
2√n 11338.638410321
3√n 504.70848253621
4√n 106.48304282993
5√n 41.862423059063

Divisors of 128564721

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 -128564720
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 128564721 can be divided by 8 positive divisors. The sum of these divisors (counting 128564721) is 1, the average is 0.125.

Base conversion 128564721

Base System Value
2 Binary 111101010011011110111110001
3 Ternary 22221220202122100
4 Quaternary 13222123313301
5 Quinary 230403032341
6 Senary 20431331013
8 Octal 752336761
10 Decimal 128564721
12 Duodecimal 37080a69
16 Hexadecimal 7a9bdf1
20 Vigesimal 203abg1
36 Base36 24jl69

Cryptographic Hash Functions

md5 1fe914d7aa65c665ce97030360c65dcf
sha1 692203b6be51f014060698e34bc76ef7b9db627c
sha256 68e55f7002bda8fd883cb567a656c56b2b826a2321ad4e9925852b6e7109f0dd
sha512 4ab5b4384cd346632cb7183e98993fc86c31717ed1256acc4d5d957664ae0117919bb641c068b78d520f7c548359dee01fe19c1d00ed5f7c5bbfe8198aebda0e
ripemd-160 1d67f8a102d7080ed47e3f08738bf9b72c355731

128564721 as geometric shapes

Circle

Radius = n
Diameter 257129442
Circumference 807795966.00884
Area 5.1927031497426E+16

Sphere

Radius = n
Volume 8.9013124224331E+24
Surface area 2.077081259897E+17
Circumference 807795966.00884

Square

Length = n
Perimeter 514258884
Area 16528887485807841
Diagonal 181817972.08091

Cube

Length = n
Surface area 99173324914847046
Volume 2.1250318080533E+24
Space diagonal 222680628.83292

Equilateral Triangle

Length = n
Perimeter 385694163
Area 7.1572182295021E+15
Altitude 111340314.41646

Triangular Pyramid

Length = n
Surface area 7.1572182295021E+15
Volume 2.5043740028526E+23
Height 60605990.693638