81124784 (number)

81124784 is an even 8-digits composite number following 81124783 and preceding 81124785. In scientific notation, it is written as 8.1124784 × 10^7. The sum of its digits is 35. It has a total of 7 prime factors and 40 positive divisors. There are 36960768 positive integers (up to 81124784) that are relatively prime to 81124784.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-four thousand seven hundred eighty-four

Notation

Scientific notation 8.1124784 × 10^7
Engineering notation 8.1124784 × 10^6

Prime Factorization of 81124784

Prime Factorization 2 × 2 × 2 × 2 × 13 × 79 × 4937

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10140598
Product of the distinct prime numbers

The prime factorization of 81124784 is 2 × 2 × 2 × 2 × 13 × 79 × 4937. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81124784)

Multiplication

n×y
n×2 162249568
n×3 243374352
n×4 324499136
n×5 405623920

Division

n÷y
n÷2 40562392
n÷3 27041594.666667
n÷3 20281196
n÷5 16224956.8

Exponentiation

ny
n2 6581230579046656
n3 5.3390090917935E+23
n4 4.3312595934579E+31
n5 3.513724989672E+39

Nth Root

y√n
2√n 9006.9297765665
3√n 432.89694187294
4√n 94.904845906658
5√n 38.179541681931

Divisors of 81124784

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81124783
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81124784 can be divided by 40 positive divisors. The sum of these divisors (counting 81124784) is 1, the average is 0.025.

Base conversion 81124784

Base System Value
2 Binary 100110101011101110110110000
3 Ternary 12122122120021122
4 Quaternary 10311131312300
5 Quinary 131231443114
6 Senary 12014441412
8 Octal 465356660
10 Decimal 81124784
12 Duodecimal 23203268
16 Hexadecimal 4d5ddb0
20 Vigesimal 1570bj4
36 Base36 1casa8

Cryptographic Hash Functions

md5 06b41ae0f22ea6322ae14668ec74bde9
sha1 4cc7ff231d6bdc85e307a26bf16a4ddde9636aa3
sha256 d7749546938c20ad9821609621cbfb5bf2dadaa1efcf65f5652650d087e02650
sha512 d6be2b5872f63dd538a5ab42b50ba3f17ea97cc843ae69b0b9595f4bb5f3ff6084c17fc064b5f427928fb5c0e5c93435e7925e92f8e52286901e095d66e4d484
ripemd-160 437613811440944b57accc6b82f0f7addb333eb0

81124784 as geometric shapes

Circle

Radius = n
Diameter 162249568
Circumference 509722050.87692
Area 2.0675545638713E+16

Sphere

Radius = n
Volume 2.236398898697E+24
Surface area 8.2702182554854E+16
Circumference 509722050.87692

Square

Length = n
Perimeter 324499136
Area 6581230579046656
Diagonal 114727769.77739

Cube

Length = n
Surface area 39487383474279936
Volume 5.3390090917935E+23
Space diagonal 140512247.64105

Equilateral Triangle

Length = n
Perimeter 243374352
Area 2.8497564348087E+15
Altitude 70256123.820525

Triangular Pyramid

Length = n
Surface area 2.8497564348087E+15
Volume 6.2920825560397E+22
Height 38242589.925796