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

81291236 (number)

81291236 is an even 8-digits composite number following 81291235 and preceding 81291237. In scientific notation, it is written as 8.1291236 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 37519008 positive integers (up to 81291236) that are relatively prime to 81291236.

Interesting facts

81291236 has 12 divisors, whose sum is 153202812
The reverse of 81291236 is 63219218
Previous prime number is 13

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one million two hundred ninety-one thousand two hundred thirty-six

Notation

Scientific notation	8.1291236 × 10^7
Engineering notation	8.1291236 × 10^6

Prime Factorization of 81291236

Prime Factorization 2 × 2 × 13 × 1563293

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	40645618	Product of the distinct prime numbers

The prime factorization of 81291236 is 2 × 2 × 13 × 1563293. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 10, 94, 26, 832, 556, 9921, 2316, 67059, 15914, 976188, 366821, 9328641, 920789, 10732539, 63845359, 166766388, 328294427, 1139646595, 3188861152

Basic calculations (n = 81291236)

Multiplication

n×y

n×2	162582472
n×3	243873708
n×4	325164944
n×5	406456180

Division

n÷y

n÷2	40645618
n÷3	27097078.666667
n÷3	20322809
n÷5	16258247.2

Exponentiation

n^y

n²	6608265050407696
n³	5.3719403376324E+23
n⁴	4.366916697644E+31
n⁵	3.5499205586052E+39

Nth Root

^y√n

²√n	9016.1652602423
³√n	433.19281255669
⁴√n	94.95348998453
⁵√n	38.195196211754

Divisors of 81291236

1, 2, 4, 13, 26, 52, 1563293, 3126586, 6253172, 20322809, 40645618, 81291236

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81291235	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81291236 can be divided by 12 positive divisors. The sum of these divisors (counting 81291236) is 1, the average is 0.083333333333333.

Base conversion 81291236

Base	System	Value
2	Binary	100110110000110011111100100
3	Ternary	12122222000121112
4	Quaternary	10312012133210
5	Quinary	131302304421
6	Senary	12022204152
8	Octal	466063744
10	Decimal	81291236
12	Duodecimal	23283658
16	Hexadecimal	4d867e4
20	Vigesimal	158181g
36	Base36	1cecpw

Cryptographic Hash Functions

md5	95a4dcb0e731808723c042db6cda0c56
sha1	0b2a5fe8f73292c208780288cfe670266bee031e
sha256	78e13c6777966d8455d53e28265aa277e26f10a41825a086fae06020bf5ac8b6
sha512	7c0a1f39efd7f6793cc1755986696205d3a38287ece7b9a19b5759ef7e922611d83d7548fa6d2a1e3c776aadd33009cf6d25df500ff499270fafba1b5e1bf1c9
ripemd-160	3a38e43e2eec4de87baac3f3b8e1dfb565f039a4

81291236 as geometric shapes

Circle

Radius = n

Diameter	162582472
Circumference	510767899.63767
Area	2.0760476935335E+16

Sphere

Radius = n

Volume	2.2501931066972E+24
Surface area	8.304190774134E+16
Circumference	510767899.63767

Square

Length = n

Perimeter	325164944
Area	6608265050407696
Diagonal	114963168.45327

Cube

Length = n

Surface area	39649590302446176
Volume	5.3719403376324E+23
Space diagonal	140800550.96207

Equilateral Triangle

Length = n

Perimeter	243873708
Area	2.861462704297E+15
Altitude	70400275.481036

Triangular Pyramid

Length = n

Surface area	2.861462704297E+15
Volume	6.3308924014491E+22
Height	38321056.151091