81931444 (number)

81931444 is an even 8-digits composite number following 81931443 and preceding 81931445. In scientific notation, it is written as 8.1931444 × 10^7. The sum of its digits is 34. It has a total of 5 prime factors and 24 positive divisors. There are 34618080 positive integers (up to 81931444) that are relatively prime to 81931444.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1931444 × 10^7
Engineering notation 8.1931444 × 10^6

Prime Factorization of 81931444

Prime Factorization 2 × 2 × 7 × 71 × 41213

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40965722
Product of the distinct prime numbers

The prime factorization of 81931444 is 2 × 2 × 7 × 71 × 41213. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 4, 8, 26, 829, 493, 3179, 6558, 4804, 23348, 474619, 653117, 9518522, 2383869, 27725212, 48212475, 442528897, 720960984, 6134227140, 3525260334

Basic calculations (n = 81931444)

Multiplication

n×y
n×2 163862888
n×3 245794332
n×4 327725776
n×5 409657220

Division

n÷y
n÷2 40965722
n÷3 27310481.333333
n÷3 20482861
n÷5 16386288.8

Exponentiation

ny
n2 6712761515925136
n3 5.4998624422738E+23
n4 4.5061167169686E+31
n5 3.6919264945377E+39

Nth Root

y√n
2√n 9051.5989747668
3√n 434.32704153852
4√n 95.139891605818
5√n 38.255168730517

Divisors of 81931444

1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 41213, 82426, 164852, 288491, 576982, 1153964, 2926123, 5852246, 11704492, 20482861, 40965722, 81931444

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 -81931443
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 81931444 can be divided by 24 positive divisors. The sum of these divisors (counting 81931444) is 1, the average is 0.041666666666667.

Base conversion 81931444

Base System Value
2 Binary 100111000100010110010110100
3 Ternary 12201011112210221
4 Quaternary 10320202302310
5 Quinary 131433301234
6 Senary 12044024124
8 Octal 470426264
10 Decimal 81931444
12 Duodecimal 23532044
16 Hexadecimal 4e22cb4
20 Vigesimal 15c18c4
36 Base36 1cs2pg

Cryptographic Hash Functions

md5 f563c1d5ee5b4b378b8c354d01486600
sha1 4b0aa301f4999a936e269f34aeee4836cb36dd91
sha256 5f1f212ee196338463325fa05119837821ef24b9b38d723bd265a2a33c53205e
sha512 1143212cd09558585e52b70983150e1ac75bebd2e2ace5635f5f20813f32762727d6430b8765e7ddd0efd7719029e984e414db98fec9b9b1c3ae791706f7eb25
ripemd-160 66aae4a66b9965476b9e3434b704b38f456a7293

81931444 as geometric shapes

Circle

Radius = n
Diameter 163862888
Circumference 514790445.13681
Area 2.1088762263731E+16

Sphere

Radius = n
Volume 2.3037769925869E+24
Surface area 8.4355049054923E+16
Circumference 514790445.13681

Square

Length = n
Perimeter 327725776
Area 6712761515925136
Diagonal 115868559.28961

Cube

Length = n
Surface area 40276569095550816
Volume 5.4998624422738E+23
Space diagonal 141909423.74548

Equilateral Triangle

Length = n
Perimeter 245794332
Area 2.9067110011689E+15
Altitude 70954711.872742

Triangular Pyramid

Length = n
Surface area 2.9067110011689E+15
Volume 6.4816500475416E+22
Height 38622853.096537