81445898 (number)

81445898 is an even 8-digits composite number following 81445897 and preceding 81445899. In scientific notation, it is written as 8.1445898 × 10^7. The sum of its digits is 47. It has a total of 5 prime factors and 16 positive divisors. There are 38940748 positive integers (up to 81445898) that are relatively prime to 81445898.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand eight hundred ninety-eight

Notation

Scientific notation 8.1445898 × 10^7
Engineering notation 8.1445898 × 10^6

Prime Factorization of 81445898

Prime Factorization 2 × 23 × 23 × 23 × 3347

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 153962
Product of the distinct prime numbers

The prime factorization of 81445898 is 2 × 23 × 23 × 23 × 3347. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 6, 66, 37, 105, 69, 1201, 8783, 81567, 49455, 504386, 63441, 4440973, 4884308, 4763714, 46350751, 641730836, 904901876, 100386853, 4878528868

Basic calculations (n = 81445898)

Multiplication

n×y
n×2 162891796
n×3 244337694
n×4 325783592
n×5 407229490

Division

n÷y
n÷2 40722949
n÷3 27148632.666667
n÷3 20361474.5
n÷5 16289179.6

Exponentiation

ny
n2 6633434301026404
n3 5.402660134711E+23
n4 4.4002450626034E+31
n5 3.583819105438E+39

Nth Root

y√n
2√n 9024.7381125438
3√n 433.46736458812
4√n 94.998621634968
5√n 38.20971894558

Divisors of 81445898

1, 2, 23, 46, 529, 1058, 3347, 6694, 12167, 24334, 76981, 153962, 1770563, 3541126, 40722949, 81445898

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 -81445897
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 81445898 can be divided by 16 positive divisors. The sum of these divisors (counting 81445898) is 1, the average is 0.0625.

Base conversion 81445898

Base System Value
2 Binary 100110110101100010000001010
3 Ternary 12200020212202202
4 Quaternary 10312230100022
5 Quinary 131322232043
6 Senary 12025400202
8 Octal 466542012
10 Decimal 81445898
12 Duodecimal 23339062
16 Hexadecimal 4dac40a
20 Vigesimal 1590eei
36 Base36 1cho22

Cryptographic Hash Functions

md5 0a5b7b20623a6ab88af60c3d454f8384
sha1 0fd9d2e663b977478bfcfa94f92f41bab8dbd1c6
sha256 0dd0730305be0640f1f20e9089249c1bda716753c20f0497f04f207cb3fc35b7
sha512 4e56aa8e3d350e7db87706a9c80056217ceae1ac3cfe153f4f7f10b78d617e3825dd66f7a1486ecd71a50f662cbc235194968546a1f9ffe64a7162221877aec0
ripemd-160 81e9c514f5a5478ca6b0e7a4d2017021b10d4efe

81445898 as geometric shapes

Circle

Radius = n
Diameter 162891796
Circumference 511739669.64365
Area 2.0839548468175E+16

Sphere

Radius = n
Volume 2.2630609852067E+24
Surface area 8.33581938727E+16
Circumference 511739669.64365

Square

Length = n
Perimeter 325783592
Area 6633434301026404
Diagonal 115181893.55126

Cube

Length = n
Surface area 39800605806158424
Volume 5.402660134711E+23
Space diagonal 141068433.40407

Equilateral Triangle

Length = n
Perimeter 244337694
Area 2.872361309512E+15
Altitude 70534216.702036

Triangular Pyramid

Length = n
Surface area 2.872361309512E+15
Volume 6.3670960295006E+22
Height 38393964.517085