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

81397 (number)

81397 is an odd 5-digits composite number following 81396 and preceding 81398. In scientific notation, it is written as 8.1397 × 10^4. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 77836 positive integers (up to 81397) that are relatively prime to 81397.

Interesting facts

81397 has 4 divisors, whose sum is 84960
The reverse of 81397 is 79318
Previous prime number is 23

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 28
Digital Root 1

Name

Name	eighty-one thousand three hundred ninety-seven

Notation

Scientific notation	8.1397 × 10^4
Engineering notation	8.1397 × 10^3

Prime Factorization of 81397

Prime Factorization 23 × 3539

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81397	Product of the distinct prime numbers

The prime factorization of 81397 is 23 × 3539. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 9, 64, 58, 268, 558, 6457, 2650, 1844, 10656, 810089, 440852, 344163, 8402736, 97836852, 45866017, 285488829, 115137953, 785639955, 564209040

Basic calculations (n = 81397)

Multiplication

n×y

n×2	162794
n×3	244191
n×4	325588
n×5	406985

Division

n÷y

n÷2	40698.5
n÷3	27132.333333333
n÷3	20349.25
n÷5	16279.4

Exponentiation

n^y

n²	6625471609
n³	539293512557773
n⁴	4.3896874041665E+19
n⁵	3.5730738563694E+24

Nth Root

^y√n

²√n	285.30159480802
³√n	43.338059970939
⁴√n	16.890873121542
⁵√n	9.5966947206332

Divisors of 81397

1, 23, 3539, 81397

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	-81396	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 81397 can be divided by 4 positive divisors. The sum of these divisors (counting 81397) is 1, the average is 0.25.

Base conversion 81397

Base	System	Value
2	Binary	10011110111110101
3	Ternary	11010122201
4	Quaternary	103313311
5	Quinary	10101042
6	Senary	1424501
8	Octal	236765
10	Decimal	81397
12	Duodecimal	3b131
16	Hexadecimal	13df5
20	Vigesimal	a39h
36	Base36	1qt1

Cryptographic Hash Functions

md5	9b79719f5015c62ffb5987f324fed5ec
sha1	b7894547394d1ea65cf1b6a8cd362b02e29a22cf
sha256	53c71d8cb8981a68ab5746f210e8dd04eb33bf9f0d10cf63b9bc0d56b410c8e2
sha512	5047ca7b0c856af4c44c9fe2fe0b3f280ad4910509522626a30caab6e2ee61b6679ff8945b4101791d8ad255f58a349d2198a94391afaa48f232a2783f56d205
ripemd-160	b1f0d27e5aa9b795e081b3349c90afdb05f09f70

81397 as geometric shapes

Circle

Radius = n

Diameter	162794
Circumference	511432.4344485
Area	20814532933.402

Sphere

Radius = n

Volume	2.2589873829068E+15
Surface area	83258131733.609
Circumference	511432.4344485

Square

Length = n

Perimeter	325588
Area	6625471609
Diagonal	115112.74133648

Cube

Length = n

Surface area	39752829654
Volume	539293512557773
Space diagonal	140983.73958368

Equilateral Triangle

Length = n

Perimeter	244191
Area	2868913362.7233
Altitude	70491.869791842

Triangular Pyramid

Length = n

Surface area	2868913362.7233
Volume	63556349963252
Height	38370.913778828