81091340 (number)

81091340 is an even 8-digits composite number following 81091339 and preceding 81091341. In scientific notation, it is written as 8.1091340 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 12 positive divisors. There are 29487680 positive integers (up to 81091340) that are relatively prime to 81091340.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1091340 × 10^7
Engineering notation 8.1091340 × 10^6

Prime Factorization of 81091340

Prime Factorization 2 × 2 × 55 × 368597

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40545670
Product of the distinct prime numbers

The prime factorization of 81091340 is 2 × 2 × 55 × 368597. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 5, 58, 57, 653, 998, 8558, 7471, 53791, 32200, 320030, 927556, 4505871, 1474393, 25885553, 76061433, 174765786, 708089976, 6422603195, 5658682110

Basic calculations (n = 81091340)

Multiplication

n×y
n×2 162182680
n×3 243274020
n×4 324365360
n×5 405456700

Division

n÷y
n÷2 40545670
n÷3 27030446.666667
n÷3 20272835
n÷5 16218268

Exponentiation

ny
n2 6575805422995600
n3 5.3324087332998E+23
n4 4.3241216961098E+31
n5 3.5064882266062E+39

Nth Root

y√n
2√n 9005.0730146957
3√n 432.83744589412
4√n 94.895063173464
5√n 38.17639323052

Divisors of 81091340

1, 2, 4, 55, 110, 220, 368597, 737194, 1474388, 20272835, 40545670, 81091340

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 -81091339
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 81091340 can be divided by 12 positive divisors. The sum of these divisors (counting 81091340) is 1, the average is 0.083333333333333.

Base conversion 81091340

Base System Value
2 Binary 100110101010101101100001100
3 Ternary 12122120212101222
4 Quaternary 10311111230030
5 Quinary 131224410330
6 Senary 12014022512
8 Octal 465255414
10 Decimal 81091340
12 Duodecimal 231a7a38
16 Hexadecimal 4d55b0c
20 Vigesimal 156g870
36 Base36 1ca2h8

Cryptographic Hash Functions

md5 1814acfd09efdd79078ca6abbd0116df
sha1 b488c7bbe79a7e622c59abc06207cd5f127f95c2
sha256 fcdd47cdba161a9e398cb1001c4ea04c181af70a78751c47a1e64553a0fe14b8
sha512 14016dc9797b9accf9dd449efdb2bbba24950aa07008aabafa43d98f72b491105e369e3fcfb7a3794f69cc34a582aa1305d19427abb1eb575ea029ded8891ad8
ripemd-160 06c438ecf717715b45f724efce178e58ecb2618e

81091340 as geometric shapes

Circle

Radius = n
Diameter 162182680
Circumference 509511916.0275
Area 2.0658502008319E+16

Sphere

Radius = n
Volume 2.2336341469964E+24
Surface area 8.2634008033276E+16
Circumference 509511916.0275

Square

Length = n
Perimeter 324365360
Area 6575805422995600
Diagonal 114680472.81901

Cube

Length = n
Surface area 39454832537973600
Volume 5.3324087332998E+23
Space diagonal 140454320.93384

Equilateral Triangle

Length = n
Perimeter 243274020
Area 2.8474072733288E+15
Altitude 70227160.466921

Triangular Pyramid

Length = n
Surface area 2.8474072733288E+15
Volume 6.2843039589578E+22
Height 38226824.273003