81442394 (number)

81442394 is an even 8-digits composite number following 81442393 and preceding 81442395. In scientific notation, it is written as 8.1442394 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 35824800 positive integers (up to 81442394) that are relatively prime to 81442394.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-two thousand three hundred ninety-four

Notation

Scientific notation 8.1442394 × 10^7
Engineering notation 8.1442394 × 10^6

Prime Factorization of 81442394

Prime Factorization 2 × 11 × 31 × 119417

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81442394
Product of the distinct prime numbers

The prime factorization of 81442394 is 2 × 11 × 31 × 119417. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 8, 93, 2, 553, 262, 1174, 5177, 20907, 71695, 670793, 611082, 7989350, 8153463, 4550111, 82263084, 43694863, 148484157, 5455880009, 9113869647

Basic calculations (n = 81442394)

Multiplication

n×y
n×2 162884788
n×3 244327182
n×4 325769576
n×5 407211970

Division

n÷y
n÷2 40721197
n÷3 27147464.666667
n÷3 20360598.5
n÷5 16288478.8

Exponentiation

ny
n2 6632863540451236
n3 5.4019628580966E+23
n4 4.3994878746247E+31
n5 3.5830482488341E+39

Nth Root

y√n
2√n 9024.5439773985
3√n 433.46114822665
4√n 94.997599850725
5√n 38.209390164972

Divisors of 81442394

1, 2, 11, 22, 31, 62, 341, 682, 119417, 238834, 1313587, 2627174, 3701927, 7403854, 40721197, 81442394

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 -81442393
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 81442394 can be divided by 16 positive divisors. The sum of these divisors (counting 81442394) is 1, the average is 0.0625.

Base conversion 81442394

Base System Value
2 Binary 100110110101011011001011010
3 Ternary 12200020200221222
4 Quaternary 10312223121122
5 Quinary 131322124034
6 Senary 12025332042
8 Octal 466533132
10 Decimal 81442394
12 Duodecimal 23337022
16 Hexadecimal 4dab65a
20 Vigesimal 15905je
36 Base36 1chlcq

Cryptographic Hash Functions

md5 2f0adffe48c561fd9047cb71b793237a
sha1 9c8cee88e21bd857d72353736bbbaf964ba15de5
sha256 57b6c8396b76763dd496f55fd84b60dbdcae2e96d222159046ac5a9918b118d1
sha512 14ee584bef890898f87a037af04bd001d5756d5c540e512e47061e6564fee1191429615be81a4e94c51225de77d2762b8a47e00d03a1e4bc90cfb24404ff44e9
ripemd-160 614703da0e67202922f6949fe9f4a81ae50cde0b

81442394 as geometric shapes

Circle

Radius = n
Diameter 162884788
Circumference 511717653.36233
Area 2.0837755370945E+16

Sphere

Radius = n
Volume 2.2627689106615E+24
Surface area 8.3351021483781E+16
Circumference 511717653.36233

Square

Length = n
Perimeter 325769576
Area 6632863540451236
Diagonal 115176938.14693

Cube

Length = n
Surface area 39797181242707416
Volume 5.4019628580966E+23
Space diagonal 141062364.29804

Equilateral Triangle

Length = n
Perimeter 244327182
Area 2.8721141629332E+15
Altitude 70531182.149021

Triangular Pyramid

Length = n
Surface area 2.8721141629332E+15
Volume 6.36627428113E+22
Height 38392312.715644