21920 (number)

21920 is an even 5-digits composite number following 21919 and preceding 21921. In scientific notation, it is written as 2.1920 × 10^4. The sum of its digits is 14. It has a total of 7 prime factors and 24 positive divisors. There are 8704 positive integers (up to 21920) that are relatively prime to 21920.

Interesting facts

Basic properties

Name

Name twenty-one thousand nine hundred twenty

Notation

Scientific notation 2.1920 × 10^4
Engineering notation 2.1920 × 10^3

Prime Factorization of 21920

Prime Factorization 2 × 2 × 2 × 2 × 2 × 5 × 137

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1370
Product of the distinct prime numbers

The prime factorization of 21920 is 2 × 2 × 2 × 2 × 2 × 5 × 137. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 10, 85, 99, 694, 762, 2730, 4542, 67574, 59475, 169175, 819804, 1995824, 2453668, 39269479, 60537278, 142490026, 782540350, 1218736138, 6841370131

Basic calculations (n = 21920)

Multiplication

n×y
n×2 43840
n×3 65760
n×4 87680
n×5 109600

Division

n÷y
n÷2 10960
n÷3 7306.6666666667
n÷3 5480
n÷5 4384

Exponentiation

ny
n2 480486400
n3 10532261888000
n4 230867180584960000
n5 5.0606085984223E+21

Nth Root

y√n
2√n 148.05404418657
3√n 27.986387941462
4√n 12.167746060244
5√n 7.3818991891774

Divisors of 21920

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 1096, 1370, 2192, 2740, 4384, 5480, 10960, 21920

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21919
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21920 can be divided by 24 positive divisors. The sum of these divisors (counting 21920) is 1, the average is 0.041666666666667.

Base conversion 21920

Base System Value
2 Binary 101010110100000
3 Ternary 1010001212
4 Quaternary 11112200
5 Quinary 1200140
6 Senary 245252
8 Octal 52640
10 Decimal 21920
12 Duodecimal 10828
16 Hexadecimal 55a0
20 Vigesimal 2eg0
36 Base36 gww

Cryptographic Hash Functions

md5 dfe8df8fc9712f0825e6c949470567b7
sha1 90ae7a9321e2d6ddb3233db9e27847b675aecef4
sha256 518181f127890fae9a44a6b93ba204dec859c8bc4bec9aad7c3d36d9312cee3f
sha512 b727ffee1b0db55cbc44222fe80a3e66ac04c809961181c6b789ecf25f696c727306aabf274de8051606d6f7dc310e898cec27a586cf3e6a07de72582abf0357
ripemd-160 4983a434d6eee4d61f295fbb00cac9e1e1a4520f

21920 as geometric shapes

Circle

Radius = n
Diameter 43840
Circumference 137727.42193338
Area 1509492544.3898

Sphere

Radius = n
Volume 44117435430699
Surface area 6037970177.5592
Circumference 137727.42193338

Square

Length = n
Perimeter 87680
Area 480486400
Diagonal 30999.561287218

Cube

Length = n
Surface area 2882918400
Volume 10532261888000
Space diagonal 37966.55370191

Equilateral Triangle

Length = n
Perimeter 65760
Area 208056714.28647
Altitude 18983.276850955

Triangular Pyramid

Length = n
Surface area 208056714.28647
Volume 1241238967039.6
Height 10333.187095739