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

81091315 (number)

81091315 is an odd 8-digits composite number following 81091314 and preceding 81091316. In scientific notation, it is written as 8.1091315 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 64873048 positive integers (up to 81091315) that are relatively prime to 81091315.

Interesting facts

81091315 has 4 divisors, whose sum is 97309584
The reverse of 81091315 is 51319018
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	eighty-one million ninety-one thousand three hundred fifteen

Notation

Scientific notation	8.1091315 × 10^7
Engineering notation	8.1091315 × 10^6

Prime Factorization of 81091315

Prime Factorization 5 × 16218263

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81091315	Product of the distinct prime numbers

The prime factorization of 81091315 is 5 × 16218263. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 5, 84, 54, 930, 24, 7689, 9820, 3566, 72928, 945310, 442690, 382932, 4280601, 71049519, 48169602, 854044038, 381772285, 835410786, 4038528522

Basic calculations (n = 81091315)

Multiplication

n×y

n×2	162182630
n×3	243273945
n×4	324365260
n×5	405456575

Division

n÷y

n÷2	40545657.5
n÷3	27030438.333333
n÷3	20272828.75
n÷5	16218263

Exponentiation

n^y

n²	6575801368429225
n³	5.3324038014473E+23
n⁴	4.3241163637036E+31
n⁵	3.5064828214574E+39

Nth Root

^y√n

²√n	9005.0716265891
³√n	432.83740141368
⁴√n	94.89505585956
⁵√n	38.176390876607

Divisors of 81091315

1, 5, 16218263, 81091315

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81091314	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81091315 can be divided by 4 positive divisors. The sum of these divisors (counting 81091315) is 1, the average is 0.25.

Base conversion 81091315

Base	System	Value
2	Binary	100110101010101101011110011
3	Ternary	12122120212101001
4	Quaternary	10311111223303
5	Quinary	131224410230
6	Senary	12014022431
8	Octal	465255363
10	Decimal	81091315
12	Duodecimal	231a7a17
16	Hexadecimal	4d55af3
20	Vigesimal	156g85f
36	Base36	1ca2gj

Cryptographic Hash Functions

md5	06cff894635b0b430e4d379b1b566842
sha1	0932dc3a31f5abad56826309d633280da4fde770
sha256	ce681c7efa624ab74fc314b5bb0463036e9de021b5fb4b3d6bdf2782b1d30426
sha512	eff2808dfb8a01d45caa9b5e34b49e53a617b6a6d6b7e0723306787e9dd070391ffb688c2c9cd2e319020ac08ccc28a952a3d6d65f8e6aa7178c72972a4a2bfe
ripemd-160	99d9538bccc53a2714b3e3278ecfbafea366befe

81091315 as geometric shapes

Circle

Radius = n

Diameter	162182630
Circumference	509511758.94787
Area	2.0658489270523E+16

Sphere

Radius = n

Volume	2.2336320811468E+24
Surface area	8.2633957082092E+16
Circumference	509511758.94787

Square

Length = n

Perimeter	324365260
Area	6575801368429225
Diagonal	114680437.46367

Cube

Length = n

Surface area	39454808210575350
Volume	5.3324038014473E+23
Space diagonal	140454277.63257

Equilateral Triangle

Length = n

Perimeter	243273945
Area	2.8474055176501E+15
Altitude	70227138.816286

Triangular Pyramid

Length = n

Surface area	2.8474055176501E+15
Volume	6.2842981467138E+22
Height	38226812.48789