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

20001981 (number)

20001981 is an odd 8-digits composite number following 20001980 and preceding 20001982. In scientific notation, it is written as 2.0001981 × 10^7. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 13334652 positive integers (up to 20001981) that are relatively prime to 20001981.

Interesting facts

20001981 has 4 divisors, whose sum is 26669312
The reverse of 20001981 is 18910002
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty million one thousand nine hundred eighty-one

Notation

Scientific notation	2.0001981 × 10^7
Engineering notation	2.0001981 × 10^6

Prime Factorization of 20001981

Prime Factorization 3 × 6667327

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20001981	Product of the distinct prime numbers

The prime factorization of 20001981 is 3 × 6667327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 3, 5, 34, 542, 714, 2850, 6130, 59523, 37009, 297778, 211162, 8148313, 9052922, 22444803, 29001226, 539012425, 248460922, 6102298709, 3792726292

Basic calculations (n = 20001981)

Multiplication

n×y

n×2	40003962
n×3	60005943
n×4	80007924
n×5	100009905

Division

n÷y

n÷2	10000990.5
n÷3	6667327
n÷3	5000495.25
n÷5	4000396.2

Exponentiation

n^y

n²	400079243924361
n³	8.0023774354694E+21
n⁴	1.6006340141909E+29
n⁵	3.20158511398E+36

Nth Root

^y√n

²√n	4472.3574320486
³√n	271.45072346577
⁴√n	66.875686404317
⁵√n	28.854569693202

Divisors of 20001981

1, 3, 6667327, 20001981

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	-20001980	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 20001981 can be divided by 4 positive divisors. The sum of these divisors (counting 20001981) is 1, the average is 0.25.

Base conversion 20001981

Base	System	Value
2	Binary	1001100010011010010111101
3	Ternary	1101122012120010
4	Quaternary	1030103102331
5	Quinary	20110030411
6	Senary	1552413433
8	Octal	114232275
10	Decimal	20001981
12	Duodecimal	6847279
16	Hexadecimal	13134bd
20	Vigesimal	6504j1
36	Base36	bwpml

Cryptographic Hash Functions

md5	5eacb95457c4b8bd4cb7556bfdaa82b4
sha1	606c9e0ce8f8fe02854f405940b78d149df09a49
sha256	8212c4e618ee89450df8ad691569818f15f290a1fcef031df9b176b60adf970a
sha512	5f478f00762329bd89b431705072105e02dd08f09b16db074c687468e15ca06b63fea1eb700558a5977157cd95e0e474cff9541cb0fd333ddfffe26f4b6f2bae
ripemd-160	5c61ac4a7ce2d06bce4561da947cefe7978cd7ce

20001981 as geometric shapes

Circle

Radius = n

Diameter	40003962
Circumference	125676153.13369
Area	1.2568860135665E+15

Sphere

Radius = n

Volume	3.3520280216698E+22
Surface area	5.0275440542661E+15
Circumference	125676153.13369

Square

Length = n

Perimeter	80007924
Area	400079243924361
Diagonal	28287072.804529

Cube

Length = n

Surface area	2400475463546166
Volume	8.0023774354694E+21
Space diagonal	34644447.344027

Equilateral Triangle

Length = n

Perimeter	60005943
Area	1.7323939438268E+14
Altitude	17322223.672014

Triangular Pyramid

Length = n

Surface area	1.7323939438268E+14
Volume	9.4308922503911E+20
Height	9429024.2681763