21949 (number)

21949 is an odd 5-digits composite number following 21948 and preceding 21950. In scientific notation, it is written as 2.1949 × 10^4. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 21436 positive integers (up to 21949) that are relatively prime to 21949.

Interesting facts

Basic properties

Name

Name twenty-one thousand nine hundred forty-nine

Notation

Scientific notation 2.1949 × 10^4
Engineering notation 2.1949 × 10^3

Prime Factorization of 21949

Prime Factorization 47 × 467

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21949
Product of the distinct prime numbers

The prime factorization of 21949 is 47 × 467. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 1, 72, 45, 748, 265, 5692, 6472, 14194, 32359, 520934, 12099, 384359, 4571760, 74804660, 57469333, 271889034, 433264316, 3377077015, 7943393068

Basic calculations (n = 21949)

Multiplication

n×y
n×2 43898
n×3 65847
n×4 87796
n×5 109745

Division

n÷y
n÷2 10974.5
n÷3 7316.3333333333
n÷3 5487.25
n÷5 4389.8

Exponentiation

ny
n2 481758601
n3 10574119533349
n4 232091349637477201
n5 5.094173033193E+21

Nth Root

y√n
2√n 148.15194902532
3√n 27.998724431687
4√n 12.171768524965
5√n 7.3838513960973

Divisors of 21949

1, 47, 467, 21949

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21948
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21949 can be divided by 4 positive divisors. The sum of these divisors (counting 21949) is 1, the average is 0.25.

Base conversion 21949

Base System Value
2 Binary 101010110111101
3 Ternary 1010002221
4 Quaternary 11112331
5 Quinary 1200244
6 Senary 245341
8 Octal 52675
10 Decimal 21949
12 Duodecimal 10851
16 Hexadecimal 55bd
20 Vigesimal 2eh9
36 Base36 gxp

Cryptographic Hash Functions

md5 5478c9cd79f4e04b6a2f6e2b4ab9f513
sha1 2cdb14c57016910ad289ef41352d864c4fe2b80a
sha256 cf39d04aaf401eb9d71cd3cd22cd14d1f0748f7f7cc73da46e5edf7f218191bb
sha512 d52ff2a78732e243f13031fcf0cec97999584ad2fcf89f762e984422b1de3af17148a06bd1834c31c0941705cd22814c94f411c50b96c9174b601e9c873feabd
ripemd-160 ec3bf83695f0848bb8854cf0e7c217715b8711b9

21949 as geometric shapes

Circle

Radius = n
Diameter 43898
Circumference 137909.63430728
Area 1513489281.7053

Sphere

Radius = n
Volume 44292768325533
Surface area 6053957126.8212
Circumference 137909.63430728

Square

Length = n
Perimeter 87796
Area 481758601
Diagonal 31040.573480527

Cube

Length = n
Surface area 2890551606
Volume 10574119533349
Space diagonal 38016.783175329

Equilateral Triangle

Length = n
Perimeter 65847
Area 208607593.47883
Altitude 19008.391587665

Triangular Pyramid

Length = n
Surface area 208607593.47883
Volume 1246171937851.4
Height 10346.857826842