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

81609918 (number)

81609918 is an even 8-digits composite number following 81609917 and preceding 81609919. In scientific notation, it is written as 8.1609918 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 24300000 positive integers (up to 81609918) that are relatively prime to 81609918.

Interesting facts

81609918 has 32 divisors, whose sum is 181450752
The reverse of 81609918 is 81990618
Previous prime number is 13

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 42
Digital Root 6

Name

Name	eighty-one million six hundred nine thousand nine hundred eighteen

Notation

Scientific notation	8.1609918 × 10^7
Engineering notation	8.1609918 × 10^6

Prime Factorization of 81609918

Prime Factorization 2 × 3 × 31 × 13 × 33751

Composite number

ω	Distinct Factors	5	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	81609918	Product of the distinct prime numbers

The prime factorization of 81609918 is 2 × 3 × 31 × 13 × 33751. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 2, 25, 22, 473, 484, 3524, 7050, 22462, 30599, 640599, 401365, 9299258, 3344596, 40133525, 44482583, 660873509, 656351573, 7490967376, 3917125320

Basic calculations (n = 81609918)

Multiplication

n×y

n×2	163219836
n×3	244829754
n×4	326439672
n×5	408049590

Division

n÷y

n÷2	40804959
n÷3	27203306
n÷3	20402479.5
n÷5	16321983.6

Exponentiation

n^y

n²	6660178715966724
n³	5.4353663887539E+23
n⁴	4.4357980528616E+31
n⁵	3.620051153586E+39

Nth Root

^y√n

²√n	9033.8207863561
³√n	433.75814921004
⁴√n	95.046413853212
⁵√n	38.2250963087

Divisors of 81609918

1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 186, 403, 806, 1209, 2418, 33751, 67502, 101253, 202506, 438763, 877526, 1046281, 1316289, 2092562, 2632578, 3138843, 6277686, 13601653, 27203306, 40804959, 81609918

32 divisors

τ	Total Divisors	32	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81609917	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.03125	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	32	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81609918 can be divided by 32 positive divisors. The sum of these divisors (counting 81609918) is 1, the average is 0.03125.

Base conversion 81609918

Base	System	Value
2	Binary	100110111010100010010111110
3	Ternary	12200120012202120
4	Quaternary	10313110102332
5	Quinary	131343004133
6	Senary	12033103410
8	Octal	467242276
10	Decimal	81609918
12	Duodecimal	233b7b66
16	Hexadecimal	4dd44be
20	Vigesimal	15a14fi
36	Base36	1cl6m6

Cryptographic Hash Functions

md5	40cf2873606cbbe0ebc945ae47bb0b92
sha1	52d5537be7c58d4986ed67479b2097a7a149ce97
sha256	e9a1b20a009702b03c55395cab5f052bbc20c2e060ec966b90fa19d63a782497
sha512	06c99a9f598d54bb902a74c38ff9fb07d17f473b390a40e8a6364a3516025699e5d7e0d8775abc26b5ca6d1c827b5fe385ff6a58cfdb596e5a7cc7fa6efc8dca
ripemd-160	2eefd3fba990e74e3481d8d73e535368ca5d64e5

81609918 as geometric shapes

Circle

Radius = n

Diameter	163219836
Circumference	512770237.69773
Area	2.0923568525676E+16

Sphere

Radius = n

Volume	2.2767609488637E+24
Surface area	8.3694274102705E+16
Circumference	512770237.69773

Square

Length = n

Perimeter	326439672
Area	6660178715966724
Diagonal	115413852.85976

Cube

Length = n

Surface area	39961072295800344
Volume	5.4353663887539E+23
Space diagonal	141352524.37753

Equilateral Triangle

Length = n

Perimeter	244829754
Area	2.8839419808858E+15
Altitude	70676262.188765

Triangular Pyramid

Length = n

Surface area	2.8839419808858E+15
Volume	6.4056407195355E+22
Height	38471284.286585