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

81397946 (number)

81397946 is an even 8-digits composite number following 81397945 and preceding 81397947. In scientific notation, it is written as 8.1397946 × 10^7. The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors. There are 34884828 positive integers (up to 81397946) that are relatively prime to 81397946.

Interesting facts

81397946 has 8 divisors, whose sum is 139539360
The reverse of 81397946 is 64979318
Previous prime number is 7

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 47
Digital Root 2

Name

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

Notation

Scientific notation	8.1397946 × 10^7
Engineering notation	8.1397946 × 10^6

Prime Factorization of 81397946

Prime Factorization 2 × 7 × 5814139

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81397946	Product of the distinct prime numbers

The prime factorization of 81397946 is 2 × 7 × 5814139. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 5, 35, 37, 369, 862, 3185, 1746, 80368, 57567, 662127, 365484, 7706860, 920390, 88400811, 46464208, 353036400, 876270994, 9318000005, 2066717747

Basic calculations (n = 81397946)

Multiplication

n×y

n×2	162795892
n×3	244193838
n×4	325591784
n×5	406989730

Division

n÷y

n÷2	40698973
n÷3	27132648.666667
n÷3	20349486.5
n÷5	16279589.2

Exponentiation

n^y

n²	6625625613018916
n³	5.3931231586473E+23
n⁴	4.3898914763892E+31
n⁵	3.5732814934099E+39

Nth Root

^y√n

²√n	9022.0810237993
³√n	433.38227862655
⁴√n	94.984635724939
⁵√n	38.205218622942

Divisors of 81397946

1, 2, 7, 14, 5814139, 11628278, 40698973, 81397946

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	-81397945	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 81397946 can be divided by 8 positive divisors. The sum of these divisors (counting 81397946) is 1, the average is 0.125.

Base conversion 81397946

Base	System	Value
2	Binary	100110110100000100010111010
3	Ternary	12200011102222202
4	Quaternary	10312200202322
5	Quinary	131314213241
6	Senary	12024350202
8	Octal	466404272
10	Decimal	81397946
12	Duodecimal	23315362
16	Hexadecimal	4da08ba
20	Vigesimal	158eeh6
36	Base36	1cgn22

Cryptographic Hash Functions

md5	90a9366c75e9a9f010c4dcf7ba9f1b54
sha1	c065a60822e19725ac1b0f43d9f7d4716176982b
sha256	cf7ff62be1034b30ba223b10c3ec1317a4bdd006e17ea0571db0bf55ddd70772
sha512	d179559af0b681c597559d094ab153c7c436c7106178e7ca12ac99df20ba5ff4476ae39f68a49db50205d96514e242eba3fac6a8b2489e8183c77b0e889db244
ripemd-160	481c7eb14055dd39c16b40890c169ba239d101f9

81397946 as geometric shapes

Circle

Radius = n

Diameter	162795892
Circumference	511438378.3418
Area	2.0815016751297E+16

Sphere

Radius = n

Volume	2.2590661460148E+24
Surface area	8.3260067005186E+16
Circumference	511438378.3418

Square

Length = n

Perimeter	325591784
Area	6625625613018916
Diagonal	115114079.18251

Cube

Length = n

Surface area	39753753678113496
Volume	5.3931231586473E+23
Space diagonal	140985378.10375

Equilateral Triangle

Length = n

Perimeter	244193838
Area	2.8689800484196E+15
Altitude	70492689.051874

Triangular Pyramid

Length = n

Surface area	2.8689800484196E+15
Volume	6.3558565954229E+22
Height	38371359.727504