81121750 (number)

81121750 is an even 8-digits composite number following 81121749 and preceding 81121751. In scientific notation, it is written as 8.1121750 × 10^7. The sum of its digits is 25. It has a total of 6 prime factors and 32 positive divisors. There are 32188000 positive integers (up to 81121750) that are relatively prime to 81121750.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand seven hundred fifty

Notation

Scientific notation 8.1121750 × 10^7
Engineering notation 8.1121750 × 10^6

Prime Factorization of 81121750

Prime Factorization 2 × 5 × 5 × 5 × 131 × 2477

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 3244870
Product of the distinct prime numbers

The prime factorization of 81121750 is 2 × 5 × 5 × 5 × 131 × 2477. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 7, 97, 19, 360, 370, 6504, 6067, 64910, 9987, 680790, 237609, 8714704, 3489442, 91858200, 36415391, 664130327, 319531802, 9728878283, 1587293664

Basic calculations (n = 81121750)

Multiplication

n×y
n×2 162243500
n×3 243365250
n×4 324487000
n×5 405608750

Division

n÷y
n÷2 40560875
n÷3 27040583.333333
n÷3 20280437.5
n÷5 16224350

Exponentiation

ny
n2 6580738323062500
n3 5.338410090589E+23
n4 4.3306116876623E+31
n5 3.5130679867362E+39

Nth Root

y√n
2√n 9006.7613491199
3√n 432.89154514282
4√n 94.903958553476
5√n 38.179256100986

Divisors of 81121750

1, 2, 5, 10, 25, 50, 125, 131, 250, 262, 655, 1310, 2477, 3275, 4954, 6550, 12385, 16375, 24770, 32750, 61925, 123850, 309625, 324487, 619250, 648974, 1622435, 3244870, 8112175, 16224350, 40560875, 81121750

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 -81121749
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 81121750 can be divided by 32 positive divisors. The sum of these divisors (counting 81121750) is 1, the average is 0.03125.

Base conversion 81121750

Base System Value
2 Binary 100110101011101000111010110
3 Ternary 12122122102010021
4 Quaternary 10311131013112
5 Quinary 131231344000
6 Senary 12014415354
8 Octal 465350726
10 Decimal 81121750
12 Duodecimal 2320155a
16 Hexadecimal 4d5d1d6
20 Vigesimal 157047a
36 Base36 1capxy

Cryptographic Hash Functions

md5 66893bbfd03390245e300550c34b5a02
sha1 eb37fb585897ba5ea69a3d2825114ddac0f487ff
sha256 3e3d1f3a74af6759191382718bfb134f06c0297ec6362c7cd15e82b243a00ee0
sha512 6d381649004b3e26b2fcf45e03295f7d664cf66943eeb87acf11c6b816e0bc9b9ca886d7b56ce61b3870e0ae5408781e3a477817f19ed6b5c471ffa825f78404
ripemd-160 1c9719e98ef65c42ec487a8449dc09e726d382f1

81121750 as geometric shapes

Circle

Radius = n
Diameter 162243500
Circumference 509702987.6927
Area 2.067399917093E+16

Sphere

Radius = n
Volume 2.2361479896592E+24
Surface area 8.269599668372E+16
Circumference 509702987.6927

Square

Length = n
Perimeter 324487000
Area 6580738323062500
Diagonal 114723479.05344

Cube

Length = n
Surface area 39484429938375000
Volume 5.338410090589E+23
Space diagonal 140506992.5989

Equilateral Triangle

Length = n
Perimeter 243365250
Area 2.849543281715E+15
Altitude 70253496.29945

Triangular Pyramid

Length = n
Surface area 2.849543281715E+15
Volume 6.2913766263502E+22
Height 38241159.68448