81123908 (number)

81123908 is an even 8-digits composite number following 81123907 and preceding 81123909. In scientific notation, it is written as 8.1123908 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 40521672 positive integers (up to 81123908) that are relatively prime to 81123908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1123908 × 10^7
Engineering notation 8.1123908 × 10^6

Prime Factorization of 81123908

Prime Factorization 2 × 2 × 1063 × 19079

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40561954
Product of the distinct prime numbers

The prime factorization of 81123908 is 2 × 2 × 1063 × 19079. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 3, 28, 83, 72, 972, 7523, 5309, 15005, 10040, 846448, 897119, 187977, 4231365, 67267492, 68677019, 467899382, 106181030, 6370875225, 5115011393

Basic calculations (n = 81123908)

Multiplication

n×y
n×2 162247816
n×3 243371724
n×4 324495632
n×5 405619540

Division

n÷y
n÷2 40561954
n÷3 27041302.666667
n÷3 20280977
n÷5 16224781.6

Exponentiation

ny
n2 6581088449192464
n3 5.3388361389215E+23
n4 4.3310725176094E+31
n5 3.5135352845988E+39

Nth Root

y√n
2√n 9006.8811472118
3√n 432.895383701
4√n 94.904589705724
5√n 38.179459227664

Divisors of 81123908

1, 2, 4, 1063, 2126, 4252, 19079, 38158, 76316, 20280977, 40561954, 81123908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81123907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81123908 can be divided by 12 positive divisors. The sum of these divisors (counting 81123908) is 1, the average is 0.083333333333333.

Base conversion 81123908

Base System Value
2 Binary 100110101011101101001000100
3 Ternary 12122122112002012
4 Quaternary 10311131221010
5 Quinary 131231431113
6 Senary 12014433352
8 Octal 465355104
10 Decimal 81123908
12 Duodecimal 23202858
16 Hexadecimal 4d5da44
20 Vigesimal 15709f8
36 Base36 1carlw

Cryptographic Hash Functions

md5 2dd55d77ab82fc5d3d0da9244f95c139
sha1 e4b8c90db62e678638e4c740a22c48b6f2f27f5d
sha256 df5b640d668c0cc04da8808c44c65ec2212cb20cad514856bf47bdb55f9a949e
sha512 752d31c77aeb5694a0f5ae7f4743a7120f59b50e1611d6ce05f2fc91b2380e8a01f40924c14320176c6535f397a07bfb6f7b915acf15276cea72e967faee79d3
ripemd-160 2293f4b25a73eea6e143b766c83bec722756b6ab

81123908 as geometric shapes

Circle

Radius = n
Diameter 162247816
Circumference 509716546.80659
Area 2.0675099124608E+16

Sphere

Radius = n
Volume 2.2363264523674E+24
Surface area 8.2700396498431E+16
Circumference 509716546.80659

Square

Length = n
Perimeter 324495632
Area 6581088449192464
Diagonal 114726530.92631

Cube

Length = n
Surface area 39486530695154784
Volume 5.3388361389215E+23
Space diagonal 140510730.36454

Equilateral Triangle

Length = n
Perimeter 243371724
Area 2.8496948907765E+15
Altitude 70255365.182272

Triangular Pyramid

Length = n
Surface area 2.8496948907765E+15
Volume 6.2918787291254E+22
Height 38242176.975436