28438891 (number)

28438891 is an odd 8-digits composite number following 28438890 and preceding 28438892. In scientific notation, it is written as 2.8438891 × 10^7. The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors. There are 26116992 positive integers (up to 28438891) that are relatively prime to 28438891.

Interesting facts

Basic properties

Name

Name twenty-eight million four hundred thirty-eight thousand eight hundred ninety-one

Notation

Scientific notation 2.8438891 × 10^7
Engineering notation 2.8438891 × 10^6

Prime Factorization of 28438891

Prime Factorization 13 × 199 × 10993

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28438891
Product of the distinct prime numbers

The prime factorization of 28438891 is 13 × 199 × 10993. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 10, 64, 74, 693, 150, 920, 7005, 91671, 96327, 321886, 703754, 4953001, 2631631, 36618738, 30523600, 264332036, 910872854, 7397724633, 5115866780

Basic calculations (n = 28438891)

Multiplication

n×y
n×2 56877782
n×3 85316673
n×4 113755564
n×5 142194455

Division

n÷y
n÷2 14219445.5
n÷3 9479630.3333333
n÷3 7109722.75
n÷5 5687778.2

Exponentiation

ny
n2 808770521309881
n3 2.3000536699545E+22
n4 6.5410975613986E+29
n5 1.8602156056898E+37

Nth Root

y√n
2√n 5332.8126725022
3√n 305.23726409533
4√n 73.026109525992
5√n 30.958686854231

Divisors of 28438891

1, 13, 199, 2587, 10993, 142909, 2187607, 28438891

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 -28438890
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 28438891 can be divided by 8 positive divisors. The sum of these divisors (counting 28438891) is 1, the average is 0.125.

Base conversion 28438891

Base System Value
2 Binary 1101100011111000101101011
3 Ternary 1222111211211021
4 Quaternary 1230133011223
5 Quinary 24240021031
6 Senary 2453313311
8 Octal 154370553
10 Decimal 28438891
12 Duodecimal 9635837
16 Hexadecimal 1b1f16b
20 Vigesimal 8heh4b
36 Base36 gxjl7

Cryptographic Hash Functions

md5 6f6b14905d2a186de5c629514ee91237
sha1 953d1ddbbfe131d688a5baaf69c33651e7d5c583
sha256 70e5531750e2cbf6919e732cc96162624d712fd419bbf5bbfe9f9bec1641f7cc
sha512 c5eb986074e3d3404a34834996178e72169464abe6979c24c3b64fec936f28d80d620eef5ee49d45110b60a404355fc9e32ae98bbda366b102ab4c6b012da297
ripemd-160 569841d4b2123e0e21c38e68fc53ca05051a3758

28438891 as geometric shapes

Circle

Radius = n
Diameter 56877782
Circumference 178686822.08368
Area 2.5408275281871E+15

Sphere

Radius = n
Volume 9.6344422831883E+22
Surface area 1.0163310112748E+16
Circumference 178686822.08368

Square

Length = n
Perimeter 113755564
Area 808770521309881
Diagonal 40218665.35105

Cube

Length = n
Surface area 4852623127859286
Volume 2.3000536699545E+22
Space diagonal 49257604.122913

Equilateral Triangle

Length = n
Perimeter 85316673
Area 3.5020790864317E+14
Altitude 24628802.061457

Triangular Pyramid

Length = n
Surface area 3.5020790864317E+14
Volume 2.7106392451964E+21
Height 13406221.783683