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

81397913 (number)

81397913 is an odd 8-digits composite number following 81397912 and preceding 81397914. In scientific notation, it is written as 8.1397913 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 80607540 positive integers (up to 81397913) that are relatively prime to 81397913.

Interesting facts

81397913 has 4 divisors, whose sum is 82188288
The reverse of 81397913 is 31979318
Previous prime number is 103

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

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

Notation

Scientific notation	8.1397913 × 10^7
Engineering notation	8.1397913 × 10^6

Prime Factorization of 81397913

Prime Factorization 103 × 790271

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81397913	Product of the distinct prime numbers

The prime factorization of 81397913 is 103 × 790271. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 14, 22, 840, 141, 2191, 7424, 32703, 38659, 181064, 935985, 5003287, 9772921, 64650296, 10903009, 58391242, 762354500, 7628489725, 9183535299

Basic calculations (n = 81397913)

Multiplication

n×y

n×2	162795826
n×3	244193739
n×4	325591652
n×5	406989565

Division

n÷y

n÷2	40698956.5
n÷3	27132637.666667
n÷3	20349478.25
n÷5	16279582.6

Exponentiation

n^y

n²	6625620240755569
n³	5.3931165992806E+23
n⁴	4.389884357471E+31
n⁵	3.5732742500948E+39

Nth Root

^y√n

²√n	9022.0791949528
³√n	433.38222005989
⁴√n	94.984626097873
⁵√n	38.205215525143

Divisors of 81397913

1, 103, 790271, 81397913

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	-81397912	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 81397913 can be divided by 4 positive divisors. The sum of these divisors (counting 81397913) is 1, the average is 0.25.

Base conversion 81397913

Base	System	Value
2	Binary	100110110100000100010011001
3	Ternary	12200011102221112
4	Quaternary	10312200202121
5	Quinary	131314213123
6	Senary	12024350105
8	Octal	466404231
10	Decimal	81397913
12	Duodecimal	23315335
16	Hexadecimal	4da0899
20	Vigesimal	158eefd
36	Base36	1cgn15

Cryptographic Hash Functions

md5	8233562f7c30b8714eee5a7c566517e3
sha1	af472033dfee98a85805589f5cd5a328749939ab
sha256	2ebb9fa2f4ccc29808883afd5d48d7f5b41ff0996aacf0d168892d97712ea730
sha512	3b9eec8e8fcd73215e6faef3dc4eb6142b29d17925d5719f00b6af8f16c06cc36b789997ad526788c5c7f506973f56f3fce23a0e4b5569149f235b0a6fe0dd56
ripemd-160	c0f04b4a2f3182fcfb93ed0e49c35a159c5d8e8b

81397913 as geometric shapes

Circle

Radius = n

Diameter	162795826
Circumference	511438170.99668
Area	2.0814999873834E+16

Sphere

Radius = n

Volume	2.2590633984338E+24
Surface area	8.3259999495334E+16
Circumference	511438170.99668

Square

Length = n

Perimeter	325591652
Area	6625620240755569
Diagonal	115114032.51347

Cube

Length = n

Surface area	39753721444533414
Volume	5.3931165992806E+23
Space diagonal	140985320.94607

Equilateral Triangle

Length = n

Perimeter	244193739
Area	2.8689777221613E+15
Altitude	70492660.473036

Triangular Pyramid

Length = n

Surface area	2.8689777221613E+15
Volume	6.3558488651351E+22
Height	38371344.171155