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

81397910 (number)

81397910 is an even 8-digits composite number following 81397909 and preceding 81397911. In scientific notation, it is written as 8.1397910 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 29598800 positive integers (up to 81397910) that are relatively prime to 81397910.

Interesting facts

81397910 has 8 divisors, whose sum is 122300496
The reverse of 81397910 is 01979318
Previous prime number is 605

Basic properties

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

Name

Name	eighty-one million three hundred ninety-seven thousand nine hundred ten

Notation

Scientific notation	8.1397910 × 10^7
Engineering notation	8.1397910 × 10^6

Prime Factorization of 81397910

Prime Factorization 2 × 605 × 67271

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81397910	Product of the distinct prime numbers

The prime factorization of 81397910 is 2 × 605 × 67271. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 3, 64, 99, 983, 418, 2709, 3830, 2653, 78917, 976955, 860644, 7099748, 8072105, 59935013, 82955331, 790628426, 827058936, 9793072494, 2113359981

Basic calculations (n = 81397910)

Multiplication

n×y

n×2	162795820
n×3	244193730
n×4	325591640
n×5	406989550

Division

n÷y

n÷2	40698955
n÷3	27132636.666667
n÷3	20349477.5
n÷5	16279582

Exponentiation

n^y

n²	6625619752368100
n³	5.3931160029748E+23
n⁴	4.389883710297E+31
n⁵	3.5732735916122E+39

Nth Root

^y√n

²√n	9022.079028694
³√n	433.38221473565
⁴√n	94.984625222685
⁵√n	38.205215243525

Divisors of 81397910

1, 2, 605, 1210, 67271, 134542, 40698955, 81397910

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	-81397909	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 81397910 can be divided by 8 positive divisors. The sum of these divisors (counting 81397910) is 1, the average is 0.125.

Base conversion 81397910

Base	System	Value
2	Binary	100110110100000100010010110
3	Ternary	12200011102221102
4	Quaternary	10312200202112
5	Quinary	131314213120
6	Senary	12024350102
8	Octal	466404226
10	Decimal	81397910
12	Duodecimal	23315332
16	Hexadecimal	4da0896
20	Vigesimal	158eefa
36	Base36	1cgn12

Cryptographic Hash Functions

md5	8c69f843d9ec8f44ede2a3758ca88c98
sha1	747e3a0b62f7165ac0e294889e34f605eb7a4076
sha256	7bd5e9d92f6efc39652929620cac1a9adaf02addbe2d57bde673dbe49ed68473
sha512	27c2cd04e7bb2bee2a2d003c3494273aa191dda914a7cb2c6c541bec8167fce550e8ea55df859affc91e3f9081e9247853b3027497c935bf8ef18ee39d2252e3
ripemd-160	00ed85d2b40e2822ebca161dc84297688b90fc96

81397910 as geometric shapes

Circle

Radius = n

Diameter	162795820
Circumference	511438152.14713
Area	2.0814998339519E+16

Sphere

Radius = n

Volume	2.2590631486538E+24
Surface area	8.3259993358076E+16
Circumference	511438152.14713

Square

Length = n

Perimeter	325591640
Area	6625619752368100
Diagonal	115114028.27082

Cube

Length = n

Surface area	39753718514208600
Volume	5.3931160029748E+23
Space diagonal	140985315.74992

Equilateral Triangle

Length = n

Perimeter	244193730
Area	2.8689775106834E+15
Altitude	70492657.874959

Triangular Pyramid

Length = n

Surface area	2.8689775106834E+15
Volume	6.355848162382E+22
Height	38371342.756942