81445875 (number)

81445875 is an odd 8-digits composite number following 81445874 and preceding 81445876. In scientific notation, it is written as 8.1445875 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 33264000 positive integers (up to 81445875) that are relatively prime to 81445875.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1445875 × 10^7
Engineering notation 8.1445875 × 10^6

Prime Factorization of 81445875

Prime Factorization 3 × 5 × 1775 × 161 × 19

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81445875
Product of the distinct prime numbers

The prime factorization of 81445875 is 3 × 5 × 1775 × 161 × 19. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 8, 24, 52, 884, 152, 7868, 1423, 33090, 85346, 663320, 422621, 1128900, 409558, 68772215, 83049033, 174184148, 427568769, 4893958739, 8870992251

Basic calculations (n = 81445875)

Multiplication

n×y
n×2 162891750
n×3 244337625
n×4 325783500
n×5 407229375

Division

n÷y
n÷2 40722937.5
n÷3 27148625
n÷3 20361468.75
n÷5 16289175

Exponentiation

ny
n2 6633430554515625
n3 5.4026555576426E+23
n4 4.4002400921581E+31
n5 3.583814045159E+39

Nth Root

y√n
2√n 9024.7368382685
3√n 433.46732378496
4√n 94.998614928158
5√n 38.209716787525

Divisors of 81445875

1, 3, 5, 15, 19, 57, 95, 161, 285, 483, 805, 1775, 2415, 3059, 5325, 8875, 9177, 15295, 26625, 33725, 45885, 101175, 168625, 285775, 505875, 857325, 1428875, 4286625, 5429725, 16289175, 27148625, 81445875

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445874
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445875 can be divided by 32 positive divisors. The sum of these divisors (counting 81445875) is 1, the average is 0.03125.

Base conversion 81445875

Base System Value
2 Binary 100110110101100001111110011
3 Ternary 12200020212201220
4 Quaternary 10312230033303
5 Quinary 131322232000
6 Senary 12025400123
8 Octal 466541763
10 Decimal 81445875
12 Duodecimal 23339043
16 Hexadecimal 4dac3f3
20 Vigesimal 1590edf
36 Base36 1cho1f

Cryptographic Hash Functions

md5 5a1b1ed07dc6b8cc16838c5f4436f7de
sha1 e2e4ad95f16d97755b66e11aadc06fb27de592b2
sha256 df5b308d43abc5702ffcf7bc73c0520dfe2fb4b784cf31dfdd5259f9fb3bf64a
sha512 0aefc2668d91e387e237de782e59c8e2395cd813e3bc1e85c1bdb08b32a17fcf163fd4cb3e83c101c79cf24b172fbd09c55118dd1c9502bc29b4f42c4f1a2e50
ripemd-160 ef8e850a840cbf2cc693befbc8fed2aa49631928

81445875 as geometric shapes

Circle

Radius = n
Diameter 162891750
Circumference 511739525.13039
Area 2.0839536698164E+16

Sphere

Radius = n
Volume 2.2630590679688E+24
Surface area 8.3358146792657E+16
Circumference 511739525.13039

Square

Length = n
Perimeter 325783500
Area 6633430554515625
Diagonal 115181861.02434

Cube

Length = n
Surface area 39800583327093750
Volume 5.4026555576426E+23
Space diagonal 141068393.5669

Equilateral Triangle

Length = n
Perimeter 244337625
Area 2.8723596872252E+15
Altitude 70534196.783452

Triangular Pyramid

Length = n
Surface area 2.8723596872252E+15
Volume 6.3670906353738E+22
Height 38393953.674781