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

81640191 (number)

81640191 is an odd 8-digits composite number following 81640190 and preceding 81640192. In scientific notation, it is written as 8.1640191 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 52549952 positive integers (up to 81640191) that are relatively prime to 81640191.

Interesting facts

81640191 has 8 divisors, whose sum is 112607280
The reverse of 81640191 is 19104618
Previous prime number is 29

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	eighty-one million six hundred forty thousand one hundred ninety-one

Notation

Scientific notation	8.1640191 × 10^7
Engineering notation	8.1640191 × 10^6

Prime Factorization of 81640191

Prime Factorization 3 × 29 × 938393

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81640191	Product of the distinct prime numbers

The prime factorization of 81640191 is 3 × 29 × 938393. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 8, 23, 38, 480, 574, 4134, 8907, 31639, 40111, 412884, 919001, 7166494, 2064478, 40918318, 61228958, 215739187, 223541447, 8837433543, 9863789990

Basic calculations (n = 81640191)

Multiplication

n×y

n×2	163280382
n×3	244920573
n×4	326560764
n×5	408200955

Division

n÷y

n÷2	40820095.5
n÷3	27213397
n÷3	20410047.75
n÷5	16328038.2

Exponentiation

n^y

n²	6665120786516481
n³	5.4414173404928E+23
n⁴	4.4423835098854E+31
n⁵	3.626770382423E+39

Nth Root

^y√n

²√n	9035.4961678925
³√n	433.81177642206
⁴√n	95.0552269362
⁵√n	38.227931789251

Divisors of 81640191

1, 3, 29, 87, 938393, 2815179, 27213397, 81640191

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	-81640190	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 81640191 can be divided by 8 positive divisors. The sum of these divisors (counting 81640191) is 1, the average is 0.125.

Base conversion 81640191

Base	System	Value
2	Binary	100110111011011101011111111
3	Ternary	12200121202021210
4	Quaternary	10313123223333
5	Quinary	131344441231
6	Senary	12033455503
8	Octal	467335377
10	Decimal	81640191
12	Duodecimal	23411593
16	Hexadecimal	4ddbaff
20	Vigesimal	15a509b
36	Base36	1cltz3

Cryptographic Hash Functions

md5	f694f1871970540e579906f782610281
sha1	9c1f426578778d0e58e7e9cdfcb4249e76b897cb
sha256	4dd95908e890ba4145b639b6fa36bc3bf4a038ed404ddb5ea69389e9e920d1f7
sha512	35c53b1e7106bb05144c70ab055f159173732015ae653ecc031c49b0c0f9303c7d7ad4d2e3856b0a227cdf0fd137b1faae9d04916737778d116f14302fbf2989
ripemd-160	0d0490826e376d37240fd0175aa853a7143c18b2

81640191 as geometric shapes

Circle

Radius = n

Diameter	163280382
Circumference	512960448.56654
Area	2.0939094498209E+16

Sphere

Radius = n

Volume	2.2792955656011E+24
Surface area	8.3756377992835E+16
Circumference	512960448.56654

Square

Length = n

Perimeter	326560764
Area	6665120786516481
Diagonal	115456665.34693

Cube

Length = n

Surface area	39990724719098886
Volume	5.4414173404928E+23
Space diagonal	141404958.75163

Equilateral Triangle

Length = n

Perimeter	244920573
Area	2.8860819602075E+15
Altitude	70702479.375814

Triangular Pyramid

Length = n

Surface area	2.8860819602075E+15
Volume	6.4127718345475E+22
Height	38485555.115643