28440 (number)

28440 is an even 5-digits composite number following 28439 and preceding 28441. In scientific notation, it is written as 2.8440 × 10^4. The sum of its digits is 18. It has a total of 5 prime factors and 16 positive divisors. There are 7488 positive integers (up to 28440) that are relatively prime to 28440.

Interesting facts

Basic properties

Name

Name twenty-eight thousand four hundred forty

Notation

Scientific notation 2.8440 × 10^4
Engineering notation 2.8440 × 10^3

Prime Factorization of 28440

Prime Factorization 2 × 2 × 2 × 45 × 79

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 7110
Product of the distinct prime numbers

The prime factorization of 28440 is 2 × 2 × 2 × 45 × 79. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 8, 29, 96, 998, 36, 9707, 7684, 39172, 24549, 251437, 575015, 4175826, 9676424, 51737534, 15311229, 33863217, 92258910, 8709337784, 2621989912

Basic calculations (n = 28440)

Multiplication

n×y
n×2 56880
n×3 85320
n×4 113760
n×5 142200

Division

n÷y
n÷2 14220
n÷3 9480
n÷3 7110
n÷5 5688

Exponentiation

ny
n2 808833600
n3 23003227584000
n4 654211792488960000
n5 1.8605783378386E+22

Nth Root

y√n
2√n 168.64163187066
3√n 30.52412317105
4√n 12.986209295659
5√n 7.7765311937889

Divisors of 28440

1, 2, 4, 8, 45, 79, 90, 158, 180, 316, 360, 632, 3555, 7110, 14220, 28440

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 -28439
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 28440 can be divided by 16 positive divisors. The sum of these divisors (counting 28440) is 1, the average is 0.0625.

Base conversion 28440

Base System Value
2 Binary 110111100011000
3 Ternary 1110000100
4 Quaternary 12330120
5 Quinary 1402230
6 Senary 335400
8 Octal 67430
10 Decimal 28440
12 Duodecimal 14560
16 Hexadecimal 6f18
20 Vigesimal 3b20
36 Base36 ly0

Cryptographic Hash Functions

md5 d79af587a459b1a0ae549a11190e0853
sha1 515e91b97e456993f045f7a3bd00d54e2b9be3f6
sha256 1976a7d8900c5df01efea988194923d06bcfdf0c75742c99763a43fd28544a3e
sha512 e034d5365d822a399e013c219d9f2071ef6fad6dc23df1f2e2fa2f50055143e52305cc2aa59bcaeab6777b30809717bad21f55265241625106fdddd5e64ced05
ripemd-160 bed8d65027494985a37fa8765f51974ccc3e6920

28440 as geometric shapes

Circle

Radius = n
Diameter 56880
Circumference 178693.79013619
Area 2541025695.7366

Sphere

Radius = n
Volume 96355694382331
Surface area 10164102782.946
Circumference 178693.79013619

Square

Length = n
Perimeter 113760
Area 808833600
Diagonal 40220.233713891

Cube

Length = n
Surface area 4853001600
Volume 23003227584000
Space diagonal 49259.524967259

Equilateral Triangle

Length = n
Perimeter 85320
Area 350235222.51721
Altitude 24629.762483629

Triangular Pyramid

Length = n
Surface area 350235222.51721
Volume 2710956368970.6
Height 13406.744571297