81490180 (number)

81490180 is an even 8-digits composite number following 81490179 and preceding 81490181. In scientific notation, it is written as 8.1490180 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 30322688 positive integers (up to 81490180) that are relatively prime to 81490180.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1490180 × 10^7
Engineering notation 8.1490180 × 10^6

Prime Factorization of 81490180

Prime Factorization 2 × 2 × 445 × 17 × 2693

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40745090
Product of the distinct prime numbers

The prime factorization of 81490180 is 2 × 2 × 445 × 17 × 2693. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 6, 70, 21, 58, 37, 6800, 4600, 62694, 17289, 485926, 775460, 5690031, 686699, 55754818, 56555464, 509252560, 345766580, 6747213668, 2108197245

Basic calculations (n = 81490180)

Multiplication

n×y
n×2 162980360
n×3 244470540
n×4 325960720
n×5 407450900

Division

n÷y
n÷2 40745090
n÷3 27163393.333333
n÷3 20372545
n÷5 16298036

Exponentiation

ny
n2 6640649436432400
n3 5.4114771789177E+23
n4 4.409822493759E+31
n5 3.5935722878447E+39

Nth Root

y√n
2√n 9027.1911467521
3√n 433.54590885138
4√n 95.011531651438
5√n 38.213872954463

Divisors of 81490180

1, 2, 4, 17, 34, 68, 445, 890, 1780, 2693, 5386, 7565, 10772, 15130, 30260, 45781, 91562, 183124, 1198385, 2396770, 4793540, 20372545, 40745090, 81490180

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81490179
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81490180 can be divided by 24 positive divisors. The sum of these divisors (counting 81490180) is 1, the average is 0.041666666666667.

Base conversion 81490180

Base System Value
2 Binary 100110110110111000100000100
3 Ternary 12200100010111211
4 Quaternary 10312313010010
5 Quinary 131330141210
6 Senary 12030341204
8 Octal 466670404
10 Decimal 81490180
12 Duodecimal 2335a804
16 Hexadecimal 4db7104
20 Vigesimal 1596590
36 Base36 1cim84

Cryptographic Hash Functions

md5 df0a26dfa39cb7b7ecd6c21e304f2203
sha1 737e2b123068af6baa4d2704c8c718f6a93f437c
sha256 bc2b2bf41e3e2aa7d1e5be5b6af48bf2569c14f21bb2794ceaa6eefa8331acf7
sha512 e19380667e266de18ee01cfbb1d525075fa149742b8f87e1876b642c45a26dda2c1b45b600319385520d74e8daeb9c246b4f6e967f79d304931cc4c1e2c65aaa
ripemd-160 cc2cab664d61ddc33c2f13b23450c99acf8059ee

81490180 as geometric shapes

Circle

Radius = n
Diameter 162980360
Circumference 512017901.65542
Area 2.0862215484561E+16

Sphere

Radius = n
Volume 2.2667542600476E+24
Surface area 8.3448861938245E+16
Circumference 512017901.65542

Square

Length = n
Perimeter 325960720
Area 6640649436432400
Diagonal 115244517.75622

Cube

Length = n
Surface area 39843896618594400
Volume 5.4114771789177E+23
Space diagonal 141145132.07793

Equilateral Triangle

Length = n
Perimeter 244470540
Area 2.8754855547886E+15
Altitude 70572566.038967

Triangular Pyramid

Length = n
Surface area 2.8754855547886E+15
Volume 6.3774870157483E+22
Height 38414839.252075