19921 (number)

19921 is an odd 5-digits composite number following 19920 and preceding 19922. In scientific notation, it is written as 1.9921 × 10^4. The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors. There are 18100 positive integers (up to 19921) that are relatively prime to 19921.

Interesting facts

Basic properties

Name

Name nineteen thousand nine hundred twenty-one

Notation

Scientific notation 1.9921 × 10^4
Engineering notation 1.9921 × 10^3

Prime Factorization of 19921

Prime Factorization 11 × 1811

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 19921
Product of the distinct prime numbers

The prime factorization of 19921 is 11 × 1811. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 2, 94, 47, 827, 646, 8446, 1971, 66436, 50664, 282217, 327395, 1864404, 9247289, 13555175, 74065113, 654177777, 731131984, 2444638321, 3675466498

Basic calculations (n = 19921)

Multiplication

n×y
n×2 39842
n×3 59763
n×4 79684
n×5 99605

Division

n÷y
n÷2 9960.5
n÷3 6640.3333333333
n÷3 4980.25
n÷5 3984.2

Exponentiation

ny
n2 396846241
n3 7905573966961
n4 157486938995830081
n5 3.1372973117359E+21

Nth Root

y√n
2√n 141.14177269682
3√n 27.108389173014
4√n 11.880310294635
5√n 7.242061809234

Divisors of 19921

1, 11, 1811, 19921

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 -19920
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 19921 can be divided by 4 positive divisors. The sum of these divisors (counting 19921) is 1, the average is 0.25.

Base conversion 19921

Base System Value
2 Binary 100110111010001
3 Ternary 1000022211
4 Quaternary 10313101
5 Quinary 1114141
6 Senary 232121
8 Octal 46721
10 Decimal 19921
12 Duodecimal b641
16 Hexadecimal 4dd1
20 Vigesimal 29g1
36 Base36 fdd

Cryptographic Hash Functions

md5 70b04185b1e0a17f468a13593457510b
sha1 a093081d520db200a5c79fd90d1ca5de875408c5
sha256 8876047aa8e7cfdbbe956f3c46d75ee1debec123339cb27efdb21e3014b1f336
sha512 2ea09154bf51378ae78472a4e7b37779be0ff4d3609a2c9dc6b341936aa9a67e414987f71c8a0affeb685499aee67b1da76e53f9b19052108d636a7e1c45b9d7
ripemd-160 6aa48e1a0378ccc3efd585cfe12d8b8af1dbf565

19921 as geometric shapes

Circle

Radius = n
Diameter 39842
Circumference 125167.33450432
Area 1246729235.3303

Sphere

Radius = n
Volume 33114790796021
Surface area 4986916941.3213
Circumference 125167.33450432

Square

Length = n
Perimeter 79684
Area 396846241
Diagonal 28172.548376034

Cube

Length = n
Surface area 2381077446
Volume 7905573966961
Space diagonal 34504.18413758

Equilateral Triangle

Length = n
Perimeter 59763
Area 171839463.05118
Altitude 17252.09206879

Triangular Pyramid

Length = n
Surface area 171839463.05118
Volume 931680826868.33
Height 9390.8494586781