20180728 (number)

20180728 is an even 8-digits composite number following 20180727 and preceding 20180729. In scientific notation, it is written as 2.0180728 × 10^7. The sum of its digits is 28. It has a total of 5 prime factors and 16 positive divisors. There are 10075968 positive integers (up to 20180728) that are relatively prime to 20180728.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0180728 × 10^7
Engineering notation 2.0180728 × 10^6

Prime Factorization of 20180728

Prime Factorization 2 × 2 × 2 × 953 × 2647

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5045182
Product of the distinct prime numbers

The prime factorization of 20180728 is 2 × 2 × 2 × 953 × 2647. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 10, 93, 7, 168, 771, 9052, 5002, 32181, 94037, 229223, 87299, 5583574, 1716680, 89252449, 1555160, 928551659, 450411364, 7332693729, 7118579100

Basic calculations (n = 20180728)

Multiplication

n×y
n×2 40361456
n×3 60542184
n×4 80722912
n×5 100903640

Division

n÷y
n÷2 10090364
n÷3 6726909.3333333
n÷3 5045182
n÷5 4036145.6

Exponentiation

ny
n2 407261782609984
n3 8.2188392596472E+21
n4 1.6586215957466E+29
n5 3.3472191278688E+36

Nth Root

y√n
2√n 4492.2965173728
3√n 272.25692995076
4√n 67.024596361133
5√n 28.905957898025

Divisors of 20180728

1, 2, 4, 8, 953, 1906, 2647, 3812, 5294, 7624, 10588, 21176, 2522591, 5045182, 10090364, 20180728

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 -20180727
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 20180728 can be divided by 16 positive divisors. The sum of these divisors (counting 20180728) is 1, the average is 0.0625.

Base conversion 20180728

Base System Value
2 Binary 1001100111110111011111000
3 Ternary 1101222021202101
4 Quaternary 1030332323320
5 Quinary 20131240403
6 Senary 2000313144
8 Octal 114767370
10 Decimal 20180728
12 Duodecimal 69127b4
16 Hexadecimal 133eef8
20 Vigesimal 662bg8
36 Base36 c0jjs

Cryptographic Hash Functions

md5 2a0fa0719f93a74a814a2f742335c240
sha1 74822879aecdaf236a2c9ddc58f7a7dcc36d5758
sha256 1039adc5daf137bfbb196c40d6c263971ec0d06eb9278a56183ff7b83550877c
sha512 ad97105c7d08d0c4b5fcc4bf6b1bf68d481359259341f2e1ce889039071b54e2301c52acd457e43acbb9932cb574be4c75fc0a6cbbd474fe6e160142a5fbf899
ripemd-160 cc4fcac1e57877d1b0565a929a7dbb484445fa01

20180728 as geometric shapes

Circle

Radius = n
Diameter 40361456
Circumference 126799253.65779
Area 1.2794506243354E+15

Sphere

Radius = n
Volume 3.4426993385524E+22
Surface area 5.1178024973416E+15
Circumference 126799253.65779

Square

Length = n
Perimeter 80722912
Area 407261782609984
Diagonal 28539859.236162

Cube

Length = n
Surface area 2443570695659904
Volume 8.2188392596472E+21
Space diagonal 34954046.229728

Equilateral Triangle

Length = n
Perimeter 60542184
Area 1.7634952486539E+14
Altitude 17477023.114864

Triangular Pyramid

Length = n
Surface area 1.7634952486539E+14
Volume 9.6859949566313E+20
Height 9513286.4120542