81120828 (number)

81120828 is an even 8-digits composite number following 81120827 and preceding 81120829. In scientific notation, it is written as 8.1120828 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 24 positive divisors. There are 26990640 positive integers (up to 81120828) that are relatively prime to 81120828.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty thousand eight hundred twenty-eight

Notation

Scientific notation 8.1120828 × 10^7
Engineering notation 8.1120828 × 10^6

Prime Factorization of 81120828

Prime Factorization 2 × 2 × 3 × 571 × 11839

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40560414
Product of the distinct prime numbers

The prime factorization of 81120828 is 2 × 2 × 3 × 571 × 11839. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 2, 39, 47, 241, 237, 2990, 3547, 81771, 58626, 745972, 288526, 4554857, 216381, 5671658, 32819012, 245720656, 351700532, 2164100522, 2802907759

Basic calculations (n = 81120828)

Multiplication

n×y
n×2 162241656
n×3 243362484
n×4 324483312
n×5 405604140

Division

n÷y
n÷2 40560414
n÷3 27040276
n÷3 20280207
n÷5 16224165.6

Exponentiation

ny
n2 6580588735405584
n3 5.3382280694357E+23
n4 4.3304148104547E+31
n5 3.5128683500755E+39

Nth Root

y√n
2√n 9006.7101652046
3√n 432.88990510786
4√n 94.903688891447
5√n 38.179169314312

Divisors of 81120828

1, 2, 3, 4, 6, 12, 571, 1142, 1713, 2284, 3426, 6852, 11839, 23678, 35517, 47356, 71034, 142068, 6760069, 13520138, 20280207, 27040276, 40560414, 81120828

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 -81120827
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 81120828 can be divided by 24 positive divisors. The sum of these divisors (counting 81120828) is 1, the average is 0.041666666666667.

Base conversion 81120828

Base System Value
2 Binary 100110101011100111000111100
3 Ternary 12122122100212010
4 Quaternary 10311130320330
5 Quinary 131231331303
6 Senary 12014411220
8 Octal 465347074
10 Decimal 81120828
12 Duodecimal 23200b10
16 Hexadecimal 4d5ce3c
20 Vigesimal 1570218
36 Base36 1cap8c

Cryptographic Hash Functions

md5 bfbdca85211352904ef5b261402243a6
sha1 afa8abdc5e002712bcf7fc73b25519641b808f41
sha256 428b5a6b042aaab6c346b6ab924455f92fd9cc6d25818e185582ce22162b2456
sha512 458a46efdecfef25f774f36131fe8af9268cc1b62d1c8ac8ab1121d5923fa9527c88d670fa39737c2fd99fe7ee220f15ab301574acaf222fc41e157f0cdb9b87
ripemd-160 308b9f25060bc130c64d421cafb0cedd3bf2bb87

81120828 as geometric shapes

Circle

Radius = n
Diameter 162241656
Circumference 509697194.59584
Area 2.0673529227446E+16

Sphere

Radius = n
Volume 2.2360717448168E+24
Surface area 8.2694116909784E+16
Circumference 509697194.59584

Square

Length = n
Perimeter 324483312
Area 6580588735405584
Diagonal 114722175.14854

Cube

Length = n
Surface area 39483532412433504
Volume 5.3382280694357E+23
Space diagonal 140505395.64806

Equilateral Triangle

Length = n
Perimeter 243362484
Area 2.8494785083595E+15
Altitude 70252697.824028

Triangular Pyramid

Length = n
Surface area 2.8494785083595E+15
Volume 6.291162112364E+22
Height 38240725.049512