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

81505909 (number)

81505909 is an odd 8-digits composite number following 81505908 and preceding 81505910. In scientific notation, it is written as 8.1505909 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 79161600 positive integers (up to 81505909) that are relatively prime to 81505909.

Interesting facts

81505909 has 8 divisors, whose sum is 83868120
The reverse of 81505909 is 90950518
Previous prime number is 229

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	eighty-one million five hundred five thousand nine hundred nine

Notation

Scientific notation	8.1505909 × 10^7
Engineering notation	8.1505909 × 10^6

Prime Factorization of 81505909

Prime Factorization 41 × 229 × 8681

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81505909	Product of the distinct prime numbers

The prime factorization of 81505909 is 41 × 229 × 8681. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 10, 16, 61, 809, 531, 9239, 7407, 82407, 48859, 358671, 136304, 3370841, 8808232, 13483728, 70936507, 666865097, 651476701, 2636860985, 3775417553

Basic calculations (n = 81505909)

Multiplication

n×y

n×2	163011818
n×3	244517727
n×4	326023636
n×5	407529545

Division

n÷y

n÷2	40752954.5
n÷3	27168636.333333
n÷3	20376477.25
n÷5	16301181.8

Exponentiation

n^y

n²	6643213201916281
n³	5.4146113070299E+23
n⁴	4.4132281646115E+31
n⁵	3.5970417318106E+39

Nth Root

^y√n

²√n	9028.0623059436
³√n	433.57380098474
⁴√n	95.016116032722
⁵√n	38.215348026936

Divisors of 81505909

1, 41, 229, 8681, 9389, 355921, 1987949, 81505909

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	-81505908	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 81505909 can be divided by 8 positive divisors. The sum of these divisors (counting 81505909) is 1, the average is 0.125.

Base conversion 81505909

Base	System	Value
2	Binary	100110110111010111001110101
3	Ternary	12200100221002101
4	Quaternary	10312322321311
5	Quinary	131331142114
6	Senary	12030542101
8	Octal	466727165
10	Decimal	81505909
12	Duodecimal	23367931
16	Hexadecimal	4dbae75
20	Vigesimal	15984f9
36	Base36	1ciyd1

Cryptographic Hash Functions

md5	cc0160945af9e26f95688586a43bae06
sha1	92d98964057155177d37a9f3dfee5720da219811
sha256	f70059b98a16faf2e76eeb486485e7f95694471be825035a98fef0ac1474f808
sha512	9ae20e34b0f2d1d5fc12c4359cac2d3b49998514ca9c51d9e6d2a6b4c44fa7734f51184a4802b0a531e4ca137459f6403c166d44dcab4a4a0902ae34a7dff757
ripemd-160	7ec512839e154e3e48faeb4b26cee0a6636457aa

81505909 as geometric shapes

Circle

Radius = n

Diameter	163011818
Circumference	512116729.87712
Area	2.0870269791371E+16

Sphere

Radius = n

Volume	2.2680670805612E+24
Surface area	8.3481079165484E+16
Circumference	512116729.87712

Square

Length = n

Perimeter	326023636
Area	6643213201916281
Diagonal	115266761.92135

Cube

Length = n

Surface area	39859279211497686
Volume	5.4146113070299E+23
Space diagonal	141172375.50509

Equilateral Triangle

Length = n

Perimeter	244517727
Area	2.8765956978078E+15
Altitude	70586187.752543

Triangular Pyramid

Length = n

Surface area	2.8765956978078E+15
Volume	6.3811806211503E+22
Height	38422253.973782