128449905 (number)

128449905 is an odd 9-digits composite number following 128449904 and preceding 128449906. In scientific notation, it is written as 1.28449905 × 10^8. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 68109248 positive integers (up to 128449905) that are relatively prime to 128449905.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million four hundred forty-nine thousand nine hundred five

Notation

Scientific notation 1.28449905 × 10^8
Engineering notation 1.28449905 × 10^6

Prime Factorization of 128449905

Prime Factorization 3 × 5 × 173 × 49499

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 128449905
Product of the distinct prime numbers

The prime factorization of 128449905 is 3 × 5 × 173 × 49499. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128449905)

Multiplication

n×y
n×2 256899810
n×3 385349715
n×4 513799620
n×5 642249525

Division

n÷y
n÷2 64224952.5
n÷3 42816635
n÷3 32112476.25
n÷5 25689981

Exponentiation

ny
n2 16499378094509025
n3 2.1193435487988E+24
n4 2.7222947750556E+32
n5 3.4967850523789E+40

Nth Root

y√n
2√n 11333.574237636
3√n 504.55819281502
4√n 106.45926092941
5√n 41.854943256147

Divisors of 128449905

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128449904
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128449905 can be divided by 16 positive divisors. The sum of these divisors (counting 128449905) is 1, the average is 0.0625.

Base conversion 128449905

Base System Value
2 Binary 111101001111111110101110001
3 Ternary 22221200221010220
4 Quaternary 13221333311301
5 Quinary 230340344110
6 Senary 20425043253
8 Octal 751776561
10 Decimal 128449905
12 Duodecimal 37026529
16 Hexadecimal 7a7fd71
20 Vigesimal 202g4f5
36 Base36 24h4kx

Cryptographic Hash Functions

md5 cc8ea5d865ed677de26e75eb77cee9a1
sha1 e6b8129b94aa55fb7375c68bc33adbd12add0674
sha256 632d369662356e7513f7d7bf43f83add6b004de5fde43b57d208f971326fff41
sha512 7c5002cc67085f17e301608c3d5037dd9f1d6ccce6fc5b82b9dbc932ef91981a6ef3d46447ac281051813a938a1bf1f341bea39a35d68b2653b942cef8409adf
ripemd-160 a2539bb20e50ee6f43094c61a5c5873eb6bc0e1b

128449905 as geometric shapes

Circle

Radius = n
Diameter 256899810
Circumference 807074555.80461
Area 5.183432501051E+16

Sphere

Radius = n
Volume 8.8774854977855E+24
Surface area 2.0733730004204E+17
Circumference 807074555.80461

Square

Length = n
Perimeter 513799620
Area 16499378094509025
Diagonal 181655597.73654

Cube

Length = n
Surface area 98996268567054150
Volume 2.1193435487988E+24
Space diagonal 222481761.6874

Equilateral Triangle

Length = n
Perimeter 385349715
Area 7.1444402882446E+15
Altitude 111240880.8437

Triangular Pyramid

Length = n
Surface area 7.1444402882446E+15
Volume 2.4976703250326E+23
Height 60551865.912179