81509946 (number)

81509946 is an even 8-digits composite number following 81509945 and preceding 81509947. In scientific notation, it is written as 8.1509946 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 23288544 positive integers (up to 81509946) that are relatively prime to 81509946.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred nine thousand nine hundred forty-six

Notation

Scientific notation 8.1509946 × 10^7
Engineering notation 8.1509946 × 10^6

Prime Factorization of 81509946

Prime Factorization 2 × 3 × 7 × 1940713

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81509946
Product of the distinct prime numbers

The prime factorization of 81509946 is 2 × 3 × 7 × 1940713. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 1, 71, 31, 813, 830, 9692, 3392, 23109, 10439, 269222, 799072, 6519122, 609224, 57820159, 67058896, 899162019, 593029674, 7080343232, 5788853797

Basic calculations (n = 81509946)

Multiplication

n×y
n×2 163019892
n×3 244529838
n×4 326039784
n×5 407549730

Division

n÷y
n÷2 40754973
n÷3 27169982
n÷3 20377486.5
n÷5 16301989.2

Exponentiation

ny
n2 6643871296922916
n3 5.4154159064314E+23
n4 4.4141025810076E+31
n5 3.5979326301639E+39

Nth Root

y√n
2√n 9028.2858838209
3√n 433.58095919187
4√n 95.017292551519
5√n 38.215726581829

Divisors of 81509946

1, 2, 3, 6, 7, 14, 21, 42, 1940713, 3881426, 5822139, 11644278, 13584991, 27169982, 40754973, 81509946

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81509945
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81509946 can be divided by 16 positive divisors. The sum of these divisors (counting 81509946) is 1, the average is 0.0625.

Base conversion 81509946

Base System Value
2 Binary 100110110111011111000111010
3 Ternary 12200101010121220
4 Quaternary 10312323320322
5 Quinary 131331304241
6 Senary 12031012510
8 Octal 466737072
10 Decimal 81509946
12 Duodecimal 2336a136
16 Hexadecimal 4dbbe3a
20 Vigesimal 1598eh6
36 Base36 1cj1h6

Cryptographic Hash Functions

md5 982da8b37c398f5fb456d893d3771d37
sha1 0177d567b6f3839ea6c8620bb6be1c8277a68b93
sha256 f9043d273d4b29dcf8a1d6bf319c5114e55d57c3d99cfcc1bbf245e163026f55
sha512 2f53f4ef84860671e4308703023fc2df72e02d21baeceb63a95557d6c83d4ff3a385ea9b55e24ad8f126d116ea2537f652ae8e18a7fff6e27748a1e9c88f9baa
ripemd-160 512215ee262f8c432b6ac053f7a29350ff9db5a7

81509946 as geometric shapes

Circle

Radius = n
Diameter 163019892
Circumference 512142095.0962
Area 2.0872337257809E+16

Sphere

Radius = n
Volume 2.2684041103704E+24
Surface area 8.3489349031236E+16
Circumference 512142095.0962

Square

Length = n
Perimeter 326039784
Area 6643871296922916
Diagonal 115272471.1015

Cube

Length = n
Surface area 39863227781537496
Volume 5.4154159064314E+23
Space diagonal 141179367.7942

Equilateral Triangle

Length = n
Perimeter 244529838
Area 2.8768806613048E+15
Altitude 70589683.897098

Triangular Pyramid

Length = n
Surface area 2.8768806613048E+15
Volume 6.3821288506385E+22
Height 38424157.033833