81491610 (number)

81491610 is an even 8-digits composite number following 81491609 and preceding 81491611. In scientific notation, it is written as 8.1491610 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 21672128 positive integers (up to 81491610) that are relatively prime to 81491610.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-one thousand six hundred ten

Notation

Scientific notation 8.1491610 × 10^7
Engineering notation 8.1491610 × 10^6

Prime Factorization of 81491610

Prime Factorization 2 × 3 × 5 × 389 × 6983

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81491610
Product of the distinct prime numbers

The prime factorization of 81491610 is 2 × 3 × 5 × 389 × 6983. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 5, 38, 21, 949, 180, 4408, 262, 90227, 94035, 360349, 772874, 6183925, 5329117, 76451706, 36085103, 578585814, 918544765, 7417574733, 2025913086

Basic calculations (n = 81491610)

Multiplication

n×y
n×2 162983220
n×3 244474830
n×4 325966440
n×5 407458050

Division

n÷y
n÷2 40745805
n÷3 27163870
n÷3 20372902.5
n÷5 16298322

Exponentiation

ny
n2 6640882500392100
n3 5.4117620677778E+23
n4 4.4101320384014E+31
n5 3.5938876012191E+39

Nth Root

y√n
2√n 9027.2703515515
3√n 433.54844480939
4√n 95.011948467293
5√n 38.214007069898

Divisors of 81491610

1, 2, 3, 5, 6, 10, 15, 30, 389, 778, 1167, 1945, 2334, 3890, 5835, 6983, 11670, 13966, 20949, 34915, 41898, 69830, 104745, 209490, 2716387, 5432774, 8149161, 13581935, 16298322, 27163870, 40745805, 81491610

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81491609
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81491610 can be divided by 32 positive divisors. The sum of these divisors (counting 81491610) is 1, the average is 0.03125.

Base conversion 81491610

Base System Value
2 Binary 100110110110111011010011010
3 Ternary 12200100012110210
4 Quaternary 10312313122122
5 Quinary 131330212420
6 Senary 12030351550
8 Octal 466673232
10 Decimal 81491610
12 Duodecimal 2335b5b6
16 Hexadecimal 4db769a
20 Vigesimal 159690a
36 Base36 1cinbu

Cryptographic Hash Functions

md5 54a7f1fd58eccca253934f4c4159e12d
sha1 4ec7df9b63b442ae02d9bc0400fe77b1417ff1d8
sha256 30f9f59eb71da15d029e71e9ce01cdf59a09588d2b75833fae1cbf5ed06eb412
sha512 669d0a264a4a6bf944728cfa480d4fc501fca3a5379fe74efc0db941708fc5bdc6708a7dc0b48d13f20baf2975c7677d73acba7253108ee4b0dca5cca9acb0d3
ripemd-160 a2b5d2f0398fbeff366841a0689ce709c52a8e68

81491610 as geometric shapes

Circle

Radius = n
Diameter 162983220
Circumference 512026886.61041
Area 2.0862947676585E+16

Sphere

Radius = n
Volume 2.2668735940142E+24
Surface area 8.3451790706339E+16
Circumference 512026886.61041

Square

Length = n
Perimeter 325966440
Area 6640882500392100
Diagonal 115246540.08162

Cube

Length = n
Surface area 39845295002352600
Volume 5.4117620677778E+23
Space diagonal 141147608.91059

Equilateral Triangle

Length = n
Perimeter 244474830
Area 2.8755864744435E+15
Altitude 70573804.455294

Triangular Pyramid

Length = n
Surface area 2.8755864744435E+15
Volume 6.3778227604897E+22
Height 38415513.36054