81489140 (number)

81489140 is an even 8-digits composite number following 81489139 and preceding 81489141. In scientific notation, it is written as 8.1489140 × 10^7. The sum of its digits is 35. It has a total of 5 prime factors and 24 positive divisors. There are 31800320 positive integers (up to 81489140) that are relatively prime to 81489140.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand one hundred forty

Notation

Scientific notation 8.1489140 × 10^7
Engineering notation 8.1489140 × 10^6

Prime Factorization of 81489140

Prime Factorization 2 × 2 × 5 × 41 × 99377

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40744570
Product of the distinct prime numbers

The prime factorization of 81489140 is 2 × 2 × 5 × 41 × 99377. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 4, 75, 41, 581, 307, 9142, 3078, 74363, 48486, 724832, 957232, 3887594, 310551, 40852867, 83688169, 334557684, 978806179, 4538245546, 3816907443

Basic calculations (n = 81489140)

Multiplication

n×y
n×2 162978280
n×3 244467420
n×4 325956560
n×5 407445700

Division

n÷y
n÷2 40744570
n÷3 27163046.666667
n÷3 20372285
n÷5 16297828

Exponentiation

ny
n2 6640479937939600
n3 5.4112699932995E+23
n4 4.4095973806178E+31
n5 3.593342982928E+39

Nth Root

y√n
2√n 9027.1335428252
3√n 433.54406449965
4√n 95.011228509188
5√n 38.213775414782

Divisors of 81489140

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99377, 198754, 397508, 496885, 993770, 1987540, 4074457, 8148914, 16297828, 20372285, 40744570, 81489140

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 -81489139
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 81489140 can be divided by 24 positive divisors. The sum of these divisors (counting 81489140) is 1, the average is 0.041666666666667.

Base conversion 81489140

Base System Value
2 Binary 100110110110110110011110100
3 Ternary 12200100002002022
4 Quaternary 10312312303310
5 Quinary 131330123030
6 Senary 12030332312
8 Octal 466666364
10 Decimal 81489140
12 Duodecimal 2335a098
16 Hexadecimal 4db6cf4
20 Vigesimal 15962h0
36 Base36 1cilf8

Cryptographic Hash Functions

md5 30135b5f439eec1274532e0cac4e7c00
sha1 22f8e9bd09b36a44143ae4ae18d3cedfe71c32f6
sha256 1f470895eaee8977e0d92938a06bcb21e2232ca9e177247f53f31ec4940a7c16
sha512 78dc2089a085dc5dabeba5298c539e74dedba0c138b98ab29c7818f152c82f1ae91aa748570ce941d5e57027666220d6892c00bb93a5c742c2ca313235c2b9db
ripemd-160 51aa6d696d64d3893c834c61646665063789876c

81489140 as geometric shapes

Circle

Radius = n
Diameter 162978280
Circumference 512011367.1427
Area 2.0861682989341E+16

Sphere

Radius = n
Volume 2.2666674743388E+24
Surface area 8.3446731957366E+16
Circumference 512011367.1427

Square

Length = n
Perimeter 325956560
Area 6640479937939600
Diagonal 115243046.97412

Cube

Length = n
Surface area 39842879627637600
Volume 5.4112699932995E+23
Space diagonal 141143330.74509

Equilateral Triangle

Length = n
Perimeter 244467420
Area 2.8754121597883E+15
Altitude 70571665.372547

Triangular Pyramid

Length = n
Surface area 2.8754121597883E+15
Volume 6.3772428451556E+22
Height 38414348.991373