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

81509909 (number)

81509909 is an odd 8-digits composite number following 81509908 and preceding 81509910. In scientific notation, it is written as 8.1509909 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 74286576 positive integers (up to 81509909) that are relatively prime to 81509909.

Interesting facts

81509909 has 8 divisors, whose sum is 88892160
The reverse of 81509909 is 90990518
Previous prime number is 79

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

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

Notation

Scientific notation	8.1509909 × 10^7
Engineering notation	8.1509909 × 10^6

Prime Factorization of 81509909

Prime Factorization 13 × 79 × 79367

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81509909	Product of the distinct prime numbers

The prime factorization of 81509909 is 13 × 79 × 79367. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 3, 44, 55, 246, 28, 1790, 1879, 33905, 21681, 891037, 686694, 1328555, 2804694, 95081131, 95091537, 569853229, 432316792, 2636768662, 3908725661

Basic calculations (n = 81509909)

Multiplication

n×y

n×2	163019818
n×3	244529727
n×4	326039636
n×5	407549545

Division

n÷y

n÷2	40754954.5
n÷3	27169969.666667
n÷3	20377477.25
n÷5	16301981.8

Exponentiation

n^y

n²	6643865265188281
n³	5.4154085317376E+23
n⁴	4.4140945661975E+31
n⁵	3.5979244640816E+39

Nth Root

^y√n

²√n	9028.2838347052
³√n	433.58089358639
⁴√n	95.017281768662
⁵√n	38.215723112358

Divisors of 81509909

1, 13, 79, 1027, 79367, 1031771, 6269993, 81509909

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	-81509908	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 81509909 can be divided by 8 positive divisors. The sum of these divisors (counting 81509909) is 1, the average is 0.125.

Base conversion 81509909

Base	System	Value
2	Binary	100110110111011111000010101
3	Ternary	12200101010120112
4	Quaternary	10312323320111
5	Quinary	131331304114
6	Senary	12031012405
8	Octal	466737025
10	Decimal	81509909
12	Duodecimal	2336a105
16	Hexadecimal	4dbbe15
20	Vigesimal	1598ef9
36	Base36	1cj1g5

Cryptographic Hash Functions

md5	ea47eb12f146b1a676ba06d8ee4e75d6
sha1	c5ad8e76967fc0501855f9ad40100a74e3c94dfe
sha256	2457842324417fa6873bab8a11569e7f3b6dc7376467605dc528a412a55bdd5e
sha512	a4f6f8000d98356cf4834c710f5010cf63c7dd514a42a4bf86858a4ecdc62e4593c0f9848fc1950512595facda990ac7a4f1b50c0d3c3d1d2d06295c17b1e88f
ripemd-160	b539fc67842ecf0eebe7aacbbf0972762c1ac1c8

81509909 as geometric shapes

Circle

Radius = n

Diameter	163019818
Circumference	512141862.61835
Area	2.0872318308556E+16

Sphere

Radius = n

Volume	2.2684010212659E+24
Surface area	8.3489273234224E+16
Circumference	512141862.61835

Square

Length = n

Perimeter	326039636
Area	6643865265188281
Diagonal	115272418.7756

Cube

Length = n

Surface area	39863191591129686
Volume	5.4154085317376E+23
Space diagonal	141179303.70832

Equilateral Triangle

Length = n

Perimeter	244529727
Area	2.876878049487E+15
Altitude	70589651.854158

Triangular Pyramid

Length = n

Surface area	2.876878049487E+15
Volume	6.3821201594785E+22
Height	38424139.591866