20181428 (number)

20181428 is an even 8-digits composite number following 20181427 and preceding 20181429. In scientific notation, it is written as 2.0181428 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 12 positive divisors. There are 9817920 positive integers (up to 20181428) that are relatively prime to 20181428.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0181428 × 10^7
Engineering notation 2.0181428 × 10^6

Prime Factorization of 20181428

Prime Factorization 2 × 2 × 37 × 136361

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10090714
Product of the distinct prime numbers

The prime factorization of 20181428 is 2 × 2 × 37 × 136361. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 96, 95, 241, 139, 2223, 5277, 50859, 2486, 680182, 416059, 4624054, 232682, 42102157, 53227286, 237752322, 730557817, 8514592678, 7646559990

Basic calculations (n = 20181428)

Multiplication

n×y
n×2 40362856
n×3 60544284
n×4 80725712
n×5 100907140

Division

n÷y
n÷2 10090714
n÷3 6727142.6666667
n÷3 5045357
n÷5 4036285.6

Exponentiation

ny
n2 407290036119184
n3 8.2196945390567E+21
n4 1.6588517352197E+29
n5 3.3477996857011E+36

Nth Root

y√n
2√n 4492.3744278499
3√n 272.26007779967
4√n 67.025177566717
5√n 28.906158424882

Divisors of 20181428

1, 2, 4, 37, 74, 148, 136361, 272722, 545444, 5045357, 10090714, 20181428

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20181427
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20181428 can be divided by 12 positive divisors. The sum of these divisors (counting 20181428) is 1, the average is 0.083333333333333.

Base conversion 20181428

Base System Value
2 Binary 1001100111111000110110100
3 Ternary 1101222022201022
4 Quaternary 1030333012310
5 Quinary 20131301203
6 Senary 2000320312
8 Octal 114770664
10 Decimal 20181428
12 Duodecimal 6913098
16 Hexadecimal 133f1b4
20 Vigesimal 662db8
36 Base36 c0k38

Cryptographic Hash Functions

md5 b58aad0652edc148209aa0da30b8dda8
sha1 610ffc9ffca8937ba849cd28b64611f747dc4578
sha256 370837b9e481992284ae4103f0f33ead24d037839e34636e80b5785b66929f56
sha512 85f04181a944ee4fb3181ed9589c2860422a0ba4e638f8d2543afde6d7da0c76ee37c5905c5efdee3ba8ccb605fc6622a790c685ff4b5206a740f33437b4551a
ripemd-160 418646758835191960e391f49e17b794404a2a81

20181428 as geometric shapes

Circle

Radius = n
Diameter 40362856
Circumference 126803651.8875
Area 1.2795393853524E+15

Sphere

Radius = n
Volume 3.4430575971537E+22
Surface area 5.1181575414094E+15
Circumference 126803651.8875

Square

Length = n
Perimeter 80725712
Area 407290036119184
Diagonal 28540849.185656

Cube

Length = n
Surface area 2443740216715104
Volume 8.2196945390567E+21
Space diagonal 34955258.665293

Equilateral Triangle

Length = n
Perimeter 60544284
Area 1.7636175899375E+14
Altitude 17477629.332647

Triangular Pyramid

Length = n
Surface area 1.7636175899375E+14
Volume 9.6870029130817E+20
Height 9513616.3952187