81887855 (number)

81887855 is an odd 8-digits composite number following 81887854 and preceding 81887856. In scientific notation, it is written as 8.1887855 × 10^7. The sum of its digits is 50. It has a total of 4 prime factors and 16 positive divisors. There are 55963680 positive integers (up to 81887855) that are relatively prime to 81887855.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred eighty-seven thousand eight hundred fifty-five

Notation

Scientific notation 8.1887855 × 10^7
Engineering notation 8.1887855 × 10^6

Prime Factorization of 81887855

Prime Factorization 7 × 5 × 311 × 7523

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81887855
Product of the distinct prime numbers

The prime factorization of 81887855 is 7 × 5 × 311 × 7523. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 7, 49, 80, 793, 247, 5077, 4742, 8594, 79794, 795511, 685195, 5458583, 4235522, 60901478, 46900158, 460144107, 318847434, 8767751218, 1901850512

Basic calculations (n = 81887855)

Multiplication

n×y
n×2 163775710
n×3 245663565
n×4 327551420
n×5 409439275

Division

n÷y
n÷2 40943927.5
n÷3 27295951.666667
n÷3 20471963.75
n÷5 16377571

Exponentiation

ny
n2 6705620796501025
n3 5.4910890346886E+23
n4 4.4965350266467E+31
n5 3.6821160826447E+39

Nth Root

y√n
2√n 9049.1908478051
3√n 434.25000461249
4√n 95.12723504762
5√n 38.251097376617

Divisors of 81887855

1, 5, 7, 35, 311, 1555, 2177, 7523, 10885, 37615, 52661, 263305, 2339653, 11698265, 16377571, 81887855

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 -81887854
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 81887855 can be divided by 16 positive divisors. The sum of these divisors (counting 81887855) is 1, the average is 0.0625.

Base conversion 81887855

Base System Value
2 Binary 100111000011000001001101111
3 Ternary 12201002100000112
4 Quaternary 10320120021233
5 Quinary 131430402410
6 Senary 12043050235
8 Octal 470301157
10 Decimal 81887855
12 Duodecimal 2351097b
16 Hexadecimal 4e1826f
20 Vigesimal 15bfjcf
36 Base36 1cr52n

Cryptographic Hash Functions

md5 39672b38f7b47dac85b18a4811a0cba2
sha1 b3333bfb5702a2d2f1df5993ce317b11aecf41a5
sha256 bfc99566e8c5b84e1d80478564985e8b76ab524f6e9791c6d674348fbd44c64a
sha512 fed17c4007ec65578261157cce6b4bc39650e0786926a2775d6c09b084077ce3f90ea22c07826e66219e5631d8bdea172d42fa33560cbcb5b869c7b21ddd5827
ripemd-160 ea5936fb9416620e1249815cb7e71fc19f4fa117

81887855 as geometric shapes

Circle

Radius = n
Diameter 163775710
Circumference 514516567.37245
Area 2.1066329032047E+16

Sphere

Radius = n
Volume 2.3001019962114E+24
Surface area 8.4265316128186E+16
Circumference 514516567.37245

Square

Length = n
Perimeter 327551420
Area 6705620796501025
Diagonal 115806915.13464

Cube

Length = n
Surface area 40233724779006150
Volume 5.4910890346886E+23
Space diagonal 141833925.38283

Equilateral Triangle

Length = n
Perimeter 245663565
Area 2.9036189789576E+15
Altitude 70916962.691417

Triangular Pyramid

Length = n
Surface area 2.9036189789576E+15
Volume 6.4713104875457E+22
Height 38602305.04488