19911 (number)

19911 is an odd 5-digits composite number following 19910 and preceding 19912. In scientific notation, it is written as 1.9911 × 10^4. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 13272 positive integers (up to 19911) that are relatively prime to 19911.

Interesting facts

Basic properties

Name

Name nineteen thousand nine hundred eleven

Notation

Scientific notation 1.9911 × 10^4
Engineering notation 1.9911 × 10^3

Prime Factorization of 19911

Prime Factorization 3 × 6637

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 19911
Product of the distinct prime numbers

The prime factorization of 19911 is 3 × 6637. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 5, 24, 82, 587, 598, 9467, 6397, 41891, 36852, 608475, 261904, 7231596, 5250493, 75280901, 78471020, 175025323, 473036022, 2405415467, 5059157679

Basic calculations (n = 19911)

Multiplication

n×y
n×2 39822
n×3 59733
n×4 79644
n×5 99555

Division

n÷y
n÷2 9955.5
n÷3 6637
n÷3 4977.75
n÷5 3982.2

Exponentiation

ny
n2 396447921
n3 7893674555031
n4 157170954065222241
n5 3.1294308663926E+21

Nth Root

y√n
2√n 141.10634287657
3√n 27.103852431816
4√n 11.878819085943
5√n 7.2413345850581

Divisors of 19911

1, 3, 6637, 19911

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 -19910
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 19911 can be divided by 4 positive divisors. The sum of these divisors (counting 19911) is 1, the average is 0.25.

Base conversion 19911

Base System Value
2 Binary 100110111000111
3 Ternary 1000022110
4 Quaternary 10313013
5 Quinary 1114121
6 Senary 232103
8 Octal 46707
10 Decimal 19911
12 Duodecimal b633
16 Hexadecimal 4dc7
20 Vigesimal 29fb
36 Base36 fd3

Cryptographic Hash Functions

md5 3dec92684ec4d9ff7e650633660f7817
sha1 ff552e7476b64aa0e67e4cf6d9a5d73254d6dd69
sha256 ef10b76ed6b18b48517d4db262fa3cf1c0de31025653e6a19fb55db60b8bc436
sha512 d2990f2d85e6a35d26d07713c407c327319c4780174514753599b06c1267ca74a29b67086f31d4ae480a7946e70ca4cdb642ba8a93b2a45254c34dc4c15c13ff
ripemd-160 e1ce5f8b83abf8ef491a0fd6a9f6a03dbdff2a59

19911 as geometric shapes

Circle

Radius = n
Diameter 39822
Circumference 125104.50265125
Area 1245477876.1445

Sphere

Radius = n
Volume 33064946655885
Surface area 4981911504.5782
Circumference 125104.50265125

Square

Length = n
Perimeter 79644
Area 396447921
Diagonal 28158.406240411

Cube

Length = n
Surface area 2378687526
Volume 7893674555031
Space diagonal 34486.863629504

Equilateral Triangle

Length = n
Perimeter 59733
Area 171666985.43176
Altitude 17243.431814752

Triangular Pyramid

Length = n
Surface area 171666985.43176
Volume 930278467723.69
Height 9386.1354134702