81445816 (number)

81445816 is an even 8-digits composite number following 81445815 and preceding 81445817. In scientific notation, it is written as 8.1445816 × 10^7. The sum of its digits is 37. It has a total of 5 prime factors and 16 positive divisors. There are 40694784 positive integers (up to 81445816) that are relatively prime to 81445816.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1445816 × 10^7
Engineering notation 8.1445816 × 10^6

Prime Factorization of 81445816

Prime Factorization 2 × 2 × 2 × 4993 × 2039

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20361454
Product of the distinct prime numbers

The prime factorization of 81445816 is 2 × 2 × 2 × 4993 × 2039. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 3, 1, 59, 922, 219, 8605, 1236, 28732, 86597, 202578, 736312, 110120, 6072721, 65983651, 68313524, 115466434, 36412271, 6333759095, 3698390623

Basic calculations (n = 81445816)

Multiplication

n×y
n×2 162891632
n×3 244337448
n×4 325783264
n×5 407229080

Division

n÷y
n÷2 40722908
n÷3 27148605.333333
n÷3 20361454
n÷5 16289163.2

Exponentiation

ny
n2 6633420943905856
n3 5.402643816479E+23
n4 4.4002273419049E+31
n5 3.5838010644695E+39

Nth Root

y√n
2√n 9024.7335694745
3√n 433.46721911595
4√n 94.998597723727
5√n 38.209711251643

Divisors of 81445816

1, 2, 4, 8, 2039, 4078, 4993, 8156, 9986, 16312, 19972, 39944, 10180727, 20361454, 40722908, 81445816

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 -81445815
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 81445816 can be divided by 16 positive divisors. The sum of these divisors (counting 81445816) is 1, the average is 0.0625.

Base conversion 81445816

Base System Value
2 Binary 100110110101100001110111000
3 Ternary 12200020212122201
4 Quaternary 10312230032320
5 Quinary 131322231231
6 Senary 12025355544
8 Octal 466541670
10 Decimal 81445816
12 Duodecimal 23338bb4
16 Hexadecimal 4dac3b8
20 Vigesimal 1590eag
36 Base36 1chnzs

Cryptographic Hash Functions

md5 ae5dd232fdea96d912d04fd7c8530fb9
sha1 d136cb925e984b6a5ba2dcc052bbb74cf5e873cf
sha256 d50241949db655b34b205601fa8ad05d7900db091ca51a743b26a448f8e4c52e
sha512 ec57cb4862ac2d887fdd13eb3fcb5ec113470fc361865c3a6fe52a08f0a7444a0781dbc8a47850e08d8bfd919ea1203cf9992d48620b8f3840e0ee92ce96fdc2
ripemd-160 098772a245d3458888cf04f6f4cd8d8fbf3cc5b8

81445816 as geometric shapes

Circle

Radius = n
Diameter 162891632
Circumference 511739154.42245
Area 2.0839506505543E+16

Sphere

Radius = n
Volume 2.2630541498417E+24
Surface area 8.3358026022173E+16
Circumference 511739154.42245

Square

Length = n
Perimeter 325783264
Area 6633420943905856
Diagonal 115181777.58574

Cube

Length = n
Surface area 39800525663435136
Volume 5.402643816479E+23
Space diagonal 141068291.37591

Equilateral Triangle

Length = n
Perimeter 244337448
Area 2.8723555257091E+15
Altitude 70534145.687953

Triangular Pyramid

Length = n
Surface area 2.8723555257091E+15
Volume 6.3670767982798E+22
Height 38393925.861915