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

81005265 (number)

81005265 is an odd 8-digits composite number following 81005264 and preceding 81005266. In scientific notation, it is written as 8.1005265 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 35925120 positive integers (up to 81005265) that are relatively prime to 81005265.

Interesting facts

81005265 has 16 divisors, whose sum is 91014528
The reverse of 81005265 is 56250018
Previous prime number is 57

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

Name	eighty-one million five thousand two hundred sixty-five

Notation

Scientific notation	8.1005265 × 10^7
Engineering notation	8.1005265 × 10^6

Prime Factorization of 81005265

Prime Factorization 1485 × 87 × 57 × 11

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81005265	Product of the distinct prime numbers

The prime factorization of 81005265 is 1485 × 87 × 57 × 11. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 5, 59, 59, 817, 421, 3804, 9341, 99954, 72720, 161150, 474281, 2254255, 9801951, 11323752, 15282444, 802364499, 914146136, 283051724, 7239655509

Basic calculations (n = 81005265)

Multiplication

n×y

n×2	162010530
n×3	243015795
n×4	324021060
n×5	405026325

Division

n÷y

n÷2	40502632.5
n÷3	27001755
n÷3	20251316.25
n÷5	16201053

Exponentiation

n^y

n²	6561852957720225
n³	5.3154463773116E+23
n⁴	4.3057914238742E+31
n⁵	3.4879177532565E+39

Nth Root

^y√n

²√n	9000.292495247
³√n	432.68424551132
⁴√n	94.869871377835
⁵√n	38.16828526454

Divisors of 81005265

1, 11, 57, 87, 627, 957, 1485, 4959, 16335, 54549, 84645, 129195, 931095, 1421145, 7364115, 81005265

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81005264	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81005265 can be divided by 16 positive divisors. The sum of these divisors (counting 81005265) is 1, the average is 0.0625.

Base conversion 81005265

Base	System	Value
2	Binary	100110101000000101011010001
3	Ternary	12122102111100000
4	Quaternary	10311000223101
5	Quinary	131214132030
6	Senary	12012120213
8	Octal	465005321
10	Decimal	81005265
12	Duodecimal	23166069
16	Hexadecimal	4d40ad1
20	Vigesimal	1565d35
36	Base36	1c8829

Cryptographic Hash Functions

md5	1b32ea1356fed7a4856e123d0be2d766
sha1	108804490784169e6f7658aa63118813d45190a9
sha256	6020888848e2045c512d928d09169a6683ef2d5af51bcc94bf17533606d8268c
sha512	8e5d04c2de78dc1c690f10c2bed2f7b3e9669c7d37c4a330a341d7a9cf476cf64cc8bb5ab199858dd546c691b1f2a9a6817b4456f532b8b8a0a153ab3e3b329a
ripemd-160	df59c270175f6cce2bfc27120423ae4c8027a746

81005265 as geometric shapes

Circle

Radius = n

Diameter	162010530
Circumference	508971090.85219
Area	2.061466904591E+16

Sphere

Radius = n

Volume	2.226528971935E+24
Surface area	8.2458676183641E+16
Circumference	508971090.85219

Square

Length = n

Perimeter	324021060
Area	6561852957720225
Diagonal	114558744.38663

Cube

Length = n

Surface area	39371117746321350
Volume	5.3154463773116E+23
Space diagonal	140305234.66058

Equilateral Triangle

Length = n

Perimeter	243015795
Area	2.8413656786419E+15
Altitude	70152617.33029

Triangular Pyramid

Length = n

Surface area	2.8413656786419E+15
Volume	6.2643136307175E+22
Height	38186248.128876