Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20001991 (number)

20001991 is an odd 8-digits composite number following 20001990 and preceding 20001992. In scientific notation, it is written as 2.0001991 × 10^7. The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors. There are 19950184 positive integers (up to 20001991) that are relatively prime to 20001991.

Interesting facts

20001991 has 4 divisors, whose sum is 20053800
The reverse of 20001991 is 19910002
Previous prime number is 389

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4

Name

Name	twenty million one thousand nine hundred ninety-one

Notation

Scientific notation	2.0001991 × 10^7
Engineering notation	2.0001991 × 10^6

Prime Factorization of 20001991

Prime Factorization 389 × 51419

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20001991	Product of the distinct prime numbers

The prime factorization of 20001991 is 389 × 51419. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 3, 93, 99, 653, 383, 4119, 8733, 16160, 70857, 931120, 280326, 1779901, 9804801, 86486535, 16032628, 171447512, 17571740, 9702503605, 8883372365

Basic calculations (n = 20001991)

Multiplication

n×y

n×2	40003982
n×3	60005973
n×4	80007964
n×5	100009955

Division

n÷y

n÷2	10000995.5
n÷3	6667330.3333333
n÷3	5000497.75
n÷5	4000398.2

Exponentiation

n^y

n²	400079643964081
n³	8.0023894378528E+21
n⁴	1.6006372151443E+29
n⁵	3.2015931171581E+36

Nth Root

^y√n

²√n	4472.358550027
³√n	271.45076870307
⁴√n	66.875694762948
⁵√n	28.854572578372

Divisors of 20001991

1, 389, 51419, 20001991

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	-20001990	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 20001991 can be divided by 4 positive divisors. The sum of these divisors (counting 20001991) is 1, the average is 0.25.

Base conversion 20001991

Base	System	Value
2	Binary	1001100010011010011000111
3	Ternary	1101122012120111
4	Quaternary	1030103103013
5	Quinary	20110030431
6	Senary	1552413451
8	Octal	114232307
10	Decimal	20001991
12	Duodecimal	6847287
16	Hexadecimal	13134c7
20	Vigesimal	6504jb
36	Base36	bwpmv

Cryptographic Hash Functions

md5	2396587a428a7bb8ce7c60b3f88887e9
sha1	0440349062e18eb43e1ab528e63d6fe4d99561ee
sha256	9639e20ddeae48dfbf4fc090d8e4ff17fae977a8d1652bd4f413b4e67f691569
sha512	16a3ef5822ecf74fba13767370ab2fe7dcf18bbe55633bd47b9fa39845bb1790dd9f896eb28a2ce0c45ad5b00e0da17fe416eb72d501c8df61ef44458da79711
ripemd-160	5c9707675e19b005cb77f7da21e4946cd7e53266

20001991 as geometric shapes

Circle

Radius = n

Diameter	40003982
Circumference	125676215.96554
Area	1.2568872703284E+15

Sphere

Radius = n

Volume	3.3520330492164E+22
Surface area	5.0275490813135E+15
Circumference	125676215.96554

Square

Length = n

Perimeter	80007964
Area	400079643964081
Diagonal	28287086.946665

Cube

Length = n

Surface area	2400477863784486
Volume	8.0023894378528E+21
Space diagonal	34644464.664535

Equilateral Triangle

Length = n

Perimeter	60005973
Area	1.7323956760496E+14
Altitude	17322232.332268

Triangular Pyramid

Length = n

Surface area	1.7323956760496E+14
Volume	9.4309063953355E+20
Height	9429028.9822215