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

20181998 (number)

20181998 is an even 8-digits composite number following 20181997 and preceding 20181999. In scientific notation, it is written as 2.0181998 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 10090998 positive integers (up to 20181998) that are relatively prime to 20181998.

Interesting facts

20181998 has 4 divisors, whose sum is 30273000
The reverse of 20181998 is 89918102
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 38
Digital Root 2

Name

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

Notation

Scientific notation	2.0181998 × 10^7
Engineering notation	2.0181998 × 10^6

Prime Factorization of 20181998

Prime Factorization 2 × 10090999

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20181998	Product of the distinct prime numbers

The prime factorization of 20181998 is 2 × 10090999. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 5, 92, 55, 612, 963, 4631, 3940, 64605, 35424, 940901, 759808, 1211872, 8571728, 80670513, 99131897, 293213934, 204719899, 3731359188, 2300859058

Basic calculations (n = 20181998)

Multiplication

n×y

n×2	40363996
n×3	60545994
n×4	80727992
n×5	100909990

Division

n÷y

n÷2	10090999
n÷3	6727332.6666667
n÷3	5045499.5
n÷5	4036399.6

Exponentiation

n^y

n²	407313043272004
n³	8.2203910246895E+21
n⁴	1.659039152195E+29
n⁵	3.3482724851521E+36

Nth Root

^y√n

²√n	4492.4378682404
³√n	272.26264099429
⁴√n	67.025650822953
⁵√n	28.906321706927

Divisors of 20181998

1, 2, 10090999, 20181998

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	-20181997	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 20181998 can be divided by 4 positive divisors. The sum of these divisors (counting 20181998) is 1, the average is 0.25.

Base conversion 20181998

Base	System	Value
2	Binary	1001100111111001111101110
3	Ternary	1101222100111102
4	Quaternary	1030333033232
5	Quinary	20131310443
6	Senary	2000323102
8	Octal	114771756
10	Decimal	20181998
12	Duodecimal	6913492
16	Hexadecimal	133f3ee
20	Vigesimal	662eji
36	Base36	c0kj2

Cryptographic Hash Functions

md5	a4e02e2ba885f29308b599bb0f3401b7
sha1	bc1d86b58f57674bc967ae6c205be627ebd8d009
sha256	76b5c30bcc5d639327243a5d2a1e0db8c895e88e95e7f08118b54573b1dd6045
sha512	839361afeb8903069d32e1e1dfe5a9556fde2cbb5c654fdef9643f4edbb869154837ed492e49216cb9c8b27d9ab47c9d62314f3699d2f4463d3c93d68c62fe51
ripemd-160	f0f3a07608f0d0f90a9cd17aecbfd84d3ec91684

20181998 as geometric shapes

Circle

Radius = n

Diameter	40363996
Circumference	126807233.30313
Area	1.2796116644546E+15

Sphere

Radius = n

Volume	3.4433493403733E+22
Surface area	5.1184466578185E+15
Circumference	126807233.30313

Square

Length = n

Perimeter	80727992
Area	407313043272004
Diagonal	28541655.287387

Cube

Length = n

Surface area	2443878259632024
Volume	8.2203910246895E+21
Space diagonal	34956245.934253

Equilateral Triangle

Length = n

Perimeter	60545994
Area	1.7637172138315E+14
Altitude	17478122.967127

Triangular Pyramid

Length = n

Surface area	1.7637172138315E+14
Volume	9.6878237292716E+20
Height	9513885.0957956