81749382 (number)

81749382 is an even 8-digits composite number following 81749381 and preceding 81749383. In scientific notation, it is written as 8.1749382 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 22866720 positive integers (up to 81749382) that are relatively prime to 81749382.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand three hundred eighty-two

Notation

Scientific notation 8.1749382 × 10^7
Engineering notation 8.1749382 × 10^6

Prime Factorization of 81749382

Prime Factorization 2 × 33 × 13 × 95279

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81749382
Product of the distinct prime numbers

The prime factorization of 81749382 is 2 × 33 × 13 × 95279. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 3, 17, 54, 84, 327, 4911, 8354, 11231, 63438, 714052, 934965, 1239528, 2116065, 39187027, 77566266, 330403006, 484906604, 2541531954, 2078510668

Basic calculations (n = 81749382)

Multiplication

n×y
n×2 163498764
n×3 245248146
n×4 326997528
n×5 408746910

Division

n÷y
n÷2 40874691
n÷3 27249794
n÷3 20437345.5
n÷5 16349876.4

Exponentiation

ny
n2 6682961457381924
n3 5.4632796907079E+23
n4 4.4661973840852E+31
n5 3.6510887603898E+39

Nth Root

y√n
2√n 9041.5364844699
3√n 434.00509313255
4√n 95.086994297169
5√n 38.238152036724

Divisors of 81749382

1, 2, 13, 26, 33, 66, 429, 858, 95279, 190558, 1238627, 2477254, 3144207, 6288414, 40874691, 81749382

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749381
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749382 can be divided by 16 positive divisors. The sum of these divisors (counting 81749382) is 1, the average is 0.0625.

Base conversion 81749382

Base System Value
2 Binary 100110111110110010110000110
3 Ternary 12200211022001220
4 Quaternary 10313312112012
5 Quinary 131411440012
6 Senary 12040101210
8 Octal 467662606
10 Decimal 81749382
12 Duodecimal 23464806
16 Hexadecimal 4df6586
20 Vigesimal 15aid92
36 Base36 1co686

Cryptographic Hash Functions

md5 818edf82e9d971da02b7fa7e05d33812
sha1 a1c299b2f4523a03c658c65531d908ed43eadda8
sha256 0f46681125f6e22a9a6573b35462128b07383965c3cd6b34a20a3fe289d7a10b
sha512 31e8298481a67cacef089c595980f8f87691e4e9d09c0669efc0d53b7fb5a27bb20af60e8d3ce34ffa6a36a738c220d97a6020a8b5fd71a23872c001c5e9922c
ripemd-160 c9125c8009ad0395faa74ea569209d7c323cd3cd

81749382 as geometric shapes

Circle

Radius = n
Diameter 163498764
Circumference 513646515.85341
Area 2.0995142618735E+16

Sphere

Radius = n
Volume 2.2884532454446E+24
Surface area 8.3980570474939E+16
Circumference 513646515.85341

Square

Length = n
Perimeter 326997528
Area 6682961457381924
Diagonal 115611084.74002

Cube

Length = n
Surface area 40097768744291544
Volume 5.4632796907079E+23
Space diagonal 141594083.11136

Equilateral Triangle

Length = n
Perimeter 245248146
Area 2.8938071973025E+15
Altitude 70797041.555678

Triangular Pyramid

Length = n
Surface area 2.8938071973025E+15
Volume 6.4385368613639E+22
Height 38537028.246673