81082912 (number)

81082912 is an even 8-digits composite number following 81082911 and preceding 81082913. In scientific notation, it is written as 8.1082912 × 10^7. The sum of its digits is 31. It has a total of 8 prime factors and 48 positive divisors. There are 37818880 positive integers (up to 81082912) that are relatively prime to 81082912.

Interesting facts

Basic properties

Name

Name eighty-one million eighty-two thousand nine hundred twelve

Notation

Scientific notation 8.1082912 × 10^7
Engineering notation 8.1082912 × 10^6

Prime Factorization of 81082912

Prime Factorization 2 × 2 × 2 × 2 × 2 × 23 × 41 × 2687

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 5067682
Product of the distinct prime numbers

The prime factorization of 81082912 is 2 × 2 × 2 × 2 × 2 × 23 × 41 × 2687. Since it has a total of 8 prime factors.

Most popular turbo-numbers

1, 3, 81, 39, 328, 168, 9528, 5586, 34641, 26989, 709350, 598867, 422825, 1274759, 44125959, 2195701, 825821778, 647094064, 8369622389, 4932467528

Basic calculations (n = 81082912)

Multiplication

n×y
n×2 162165824
n×3 243248736
n×4 324331648
n×5 405414560

Division

n÷y
n÷2 40541456
n÷3 27027637.333333
n÷3 20270728
n÷5 16216582.4

Exponentiation

ny
n2 6574438618399744
n3 5.3307462794511E+23
n4 4.3223243147106E+31
n5 3.5046664204514E+39

Nth Root

y√n
2√n 9004.6050440872
3√n 432.8224501277
4√n 94.892597414588
5√n 38.175599646349

Divisors of 81082912

1, 2, 4, 8, 16, 23, 32, 41, 46, 82, 92, 164, 184, 328, 368, 656, 736, 943, 1312, 1886, 2687, 3772, 5374, 7544, 10748, 15088, 21496, 30176, 42992, 61801, 85984, 110167, 123602, 220334, 247204, 440668, 494408, 881336, 988816, 1762672, 1977632, 2533841, 3525344, 5067682, 10135364, 20270728, 40541456, 81082912

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81082911
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81082912 can be divided by 48 positive divisors. The sum of these divisors (counting 81082912) is 1, the average is 0.020833333333333.

Base conversion 81082912

Base System Value
2 Binary 100110101010011101000100000
3 Ternary 12122120102211211
4 Quaternary 10311103220200
5 Quinary 131224123122
6 Senary 12013515504
8 Octal 465235040
10 Decimal 81082912
12 Duodecimal 231a2b94
16 Hexadecimal 4d53a20
20 Vigesimal 156f75c
36 Base36 1c9vz4

Cryptographic Hash Functions

md5 7ec5df099de2cdcb9e3a6ca6515bcb8a
sha1 6e7757d78a256bf0fa90b8021b0cc42013b81632
sha256 3e9601d6996f800e19a66b6a4b2ed6168ab0a85c41ecc4acfc2c220b2b2eca1b
sha512 db2a7ba1ebf0dfb5fa12bb63a1c75312878f88df420880d03c8fee3adc1922f9ed9dba741fdb8a9c19ac34e59e47f975501c34eb238f5ad12e194fef3de45b51
ripemd-160 97e7eda341bd7ecba4b2635b7de8d5441c104b69

81082912 as geometric shapes

Circle

Radius = n
Diameter 162165824
Circumference 509458961.34174
Area 2.0654208065042E+16

Sphere

Radius = n
Volume 2.2329377799566E+24
Surface area 8.2616832260167E+16
Circumference 509458961.34174

Square

Length = n
Perimeter 324331648
Area 6574438618399744
Diagonal 114668553.8271

Cube

Length = n
Surface area 39446631710398464
Volume 5.3307462794511E+23
Space diagonal 140439723.20964

Equilateral Triangle

Length = n
Perimeter 243248736
Area 2.8468154295778E+15
Altitude 70219861.604818

Triangular Pyramid

Length = n
Surface area 2.8468154295778E+15
Volume 6.282344738308E+22
Height 38222851.275701