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

81997946 (number)

81997946 is an even 8-digits composite number following 81997945 and preceding 81997947. In scientific notation, it is written as 8.1997946 × 10^7. The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors. There are 40985920 positive integers (up to 81997946) that are relatively prime to 81997946.

Interesting facts

81997946 has 8 divisors, whose sum is 123036084
The reverse of 81997946 is 64979918
Previous prime number is 5261

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 53
Digital Root 8

Name

Name	eighty-one million nine hundred ninety-seven thousand nine hundred forty-six

Notation

Scientific notation	8.1997946 × 10^7
Engineering notation	8.1997946 × 10^6

Prime Factorization of 81997946

Prime Factorization 2 × 5261 × 7793

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81997946	Product of the distinct prime numbers

The prime factorization of 81997946 is 2 × 5261 × 7793. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 1, 100, 69, 31, 712, 7559, 9949, 43019, 57848, 300312, 654560, 3638717, 470221, 81708280, 36996951, 391527146, 79926795, 1517238409, 9892687476

Basic calculations (n = 81997946)

Multiplication

n×y

n×2	163995892
n×3	245993838
n×4	327991784
n×5	409989730

Division

n÷y

n÷2	40998973
n÷3	27332648.666667
n÷3	20499486.5
n÷5	16399589.2

Exponentiation

n^y

n²	6723663148218916
n³	5.5132656774984E+23
n⁴	4.5207646130717E+31
n⁵	3.7069341262137E+39

Nth Root

^y√n

²√n	9055.2717242499
³√n	434.44452108114
⁴√n	95.159191485899
⁵√n	38.261376895612

Divisors of 81997946

1, 2, 5261, 7793, 10522, 15586, 40998973, 81997946

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81997945	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81997946 can be divided by 8 positive divisors. The sum of these divisors (counting 81997946) is 1, the average is 0.125.

Base conversion 81997946

Base	System	Value
2	Binary	100111000110011000001111010
3	Ternary	12201021221000222
4	Quaternary	10320303001322
5	Quinary	131442413241
6	Senary	12045300042
8	Octal	470630172
10	Decimal	81997946
12	Duodecimal	23564622
16	Hexadecimal	4e3307a
20	Vigesimal	15c9eh6
36	Base36	1cti0q

Cryptographic Hash Functions

md5	5e88144f1ca17d9a7f34e9e1ef7fe366
sha1	bb48acffd6877b4c46c47127d0c1bf7b1ecfcd32
sha256	b06850846fb7eec44d1d9bdcc393db6d81e3aa01e29d592d2dea33f7903fee6f
sha512	0fd461096ad3bdbd2379f6e78086cda6f6bfb0c7d31879c54ac281d817607e11b8ec8a135d758a82dc22cbb76ab1b679993013a4726397b422dca1b221e20282
ripemd-160	35409b8616e9458d33b8f25f5abdc82923b3fb00

81997946 as geometric shapes

Circle

Radius = n

Diameter	163995892
Circumference	515208289.52611
Area	2.1123010751657E+16

Sphere

Radius = n

Volume	2.309391326629E+24
Surface area	8.4492043006628E+16
Circumference	515208289.52611

Square

Length = n

Perimeter	327991784
Area	6723663148218916
Diagonal	115962607.31994

Cube

Length = n

Surface area	40341978889313496
Volume	5.5132656774984E+23
Space diagonal	142024608.58829

Equilateral Triangle

Length = n

Perimeter	245993838
Area	2.9114315464234E+15
Altitude	71012304.294145

Triangular Pyramid

Length = n

Surface area	2.9114315464234E+15
Volume	6.497445911737E+22
Height	38654202.439979