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

20081981 (number)

20081981 is an odd 8-digits composite number following 20081980 and preceding 20081982. In scientific notation, it is written as 2.0081981 × 10^7. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 18900672 positive integers (up to 20081981) that are relatively prime to 20081981.

Interesting facts

20081981 has 4 divisors, whose sum is 21263292
The reverse of 20081981 is 18918002
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	twenty million eighty-one thousand nine hundred eighty-one

Notation

Scientific notation	2.0081981 × 10^7
Engineering notation	2.0081981 × 10^6

Prime Factorization of 20081981

Prime Factorization 17 × 1181293

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20081981	Product of the distinct prime numbers

The prime factorization of 20081981 is 17 × 1181293. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 7, 41, 96, 69, 999, 3793, 5489, 57471, 19883, 736005, 260372, 1989291, 6004996, 60442463, 82578632, 490834207, 736145749, 9050175994, 8595895841

Basic calculations (n = 20081981)

Multiplication

n×y

n×2	40163962
n×3	60245943
n×4	80327924
n×5	100409905

Division

n÷y

n÷2	10040990.5
n÷3	6693993.6666667
n÷3	5020495.25
n÷5	4016396.2

Exponentiation

n^y

n²	403285960884361
n³	8.0987810040465E+21
n⁴	1.6263956624642E+29
n⁵	3.2661246792089E+36

Nth Root

^y√n

²√n	4481.2923359228
³√n	271.81214050343
⁴√n	66.942455407034
⁵√n	28.87761422458

Divisors of 20081981

1, 17, 1181293, 20081981

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	-20081980	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 20081981 can be divided by 4 positive divisors. The sum of these divisors (counting 20081981) is 1, the average is 0.25.

Base conversion 20081981

Base	System	Value
2	Binary	1001100100110110100111101
3	Ternary	1101210021022002
4	Quaternary	1030212310331
5	Quinary	20120110411
6	Senary	1554232045
8	Octal	114466475
10	Decimal	20081981
12	Duodecimal	6885625
16	Hexadecimal	1326d3d
20	Vigesimal	65a4j1
36	Base36	byfct

Cryptographic Hash Functions

md5	2b7a937e762e798cea00caa6c70d265b
sha1	6a331413db4522aab283d040007d0d20f3b41628
sha256	522b922ec2640b13d5bbe51e37b3bf6da56065ecbb656eb27d0b9c6e11cc822e
sha512	59fe748f82fe90c2f098ff7007ad1d682c4714fb230af24ad8973ff4b07459a30025b2ff05e11cb86370a386a88d632d3bd2ce1334e342adfd2feac7eb416e23
ripemd-160	2de85cf9673a1ece2940e7bebc272cc23f3d8086

20081981 as geometric shapes

Circle

Radius = n

Diameter	40163962
Circumference	126178807.95826
Area	1.2669602120102E+15

Sphere

Radius = n

Volume	3.392409454046E+22
Surface area	5.0678408480408E+15
Circumference	126178807.95826

Square

Length = n

Perimeter	80327924
Area	403285960884361
Diagonal	28400209.889519

Cube

Length = n

Surface area	2419715765306166
Volume	8.0987810040465E+21
Space diagonal	34783011.408633

Equilateral Triangle

Length = n

Perimeter	60245943
Area	1.7462794355774E+14
Altitude	17391505.704316

Triangular Pyramid

Length = n

Surface area	1.7462794355774E+14
Volume	9.5445049455101E+20
Height	9466736.6298396