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

20718981 (number)

20718981 is an odd 8-digits composite number following 20718980 and preceding 20718982. In scientific notation, it is written as 2.0718981 × 10^7. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 13475520 positive integers (up to 20718981) that are relatively prime to 20718981.

Interesting facts

20718981 has 4 divisors, whose sum is 20775500
The reverse of 20718981 is 18981702
Previous prime number is 369

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

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

Notation

Scientific notation	2.0718981 × 10^7
Engineering notation	2.0718981 × 10^6

Prime Factorization of 20718981

Prime Factorization 369 × 56149

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20718981	Product of the distinct prime numbers

The prime factorization of 20718981 is 369 × 56149. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 92, 91, 542, 622, 1289, 4145, 88523, 30065, 373368, 135058, 106730, 4986332, 65435706, 60102806, 392027783, 441699287, 3459307076, 9962227118

Basic calculations (n = 20718981)

Multiplication

n×y

n×2	41437962
n×3	62156943
n×4	82875924
n×5	103594905

Division

n÷y

n÷2	10359490.5
n÷3	6906327
n÷3	5179745.25
n÷5	4143796.2

Exponentiation

n^y

n²	429276173678361
n³	8.8941648861947E+21
n⁴	1.8427803328793E+29
n⁵	3.8180530704101E+36

Nth Root

^y√n

²√n	4551.8107385962
³√n	274.65623602135
⁴√n	67.467108568518
⁵√n	29.058532529713

Divisors of 20718981

1, 369, 56149, 20718981

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	-20718980	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 20718981 can be divided by 4 positive divisors. The sum of these divisors (counting 20718981) is 1, the average is 0.25.

Base conversion 20718981

Base	System	Value
2	Binary	1001111000010010110000101
3	Ternary	1102222122002200
4	Quaternary	1033002112011
5	Quinary	20301001411
6	Senary	2020025113
8	Octal	117022605
10	Decimal	20718981
12	Duodecimal	6b32199
16	Hexadecimal	13c2585
20	Vigesimal	699h91
36	Base36	cc2v9

Cryptographic Hash Functions

md5	6c1b6832e3e21504feb0443c5db17506
sha1	19315e77f10334bfce2ec095ccc0b94cd78b8ec5
sha256	9aa87ae8abede6f2341426bcb92c7399c529186572924320bd38cc87e401b247
sha512	877e9c0927e8ff211c9d4a4dc1a1dc5df1def77f7847b70cf319b3fd53c7de1e69bab163b09db8dd88fd84b6080467582cb18459d130ad0749b0e0eab4b143d3
ripemd-160	5c07a28d5ae6db3d5b09699526be01658ea0c6b7

20718981 as geometric shapes

Circle

Radius = n

Diameter	41437962
Circumference	130181196.99893
Area	1.3486108735891E+15

Sphere

Radius = n

Volume	3.7255790755047E+22
Surface area	5.3944434943563E+15
Circumference	130181196.99893

Square

Length = n

Perimeter	82875924
Area	429276173678361
Diagonal	29301063.92875

Cube

Length = n

Surface area	2575657042070166
Volume	8.8941648861947E+21
Space diagonal	35886327.773054

Equilateral Triangle

Length = n

Perimeter	62156943
Area	1.8588203582242E+14
Altitude	17943163.886527

Triangular Pyramid

Length = n

Surface area	1.8588203582242E+14
Volume	1.0481873840033E+21
Height	9767021.3095835