81128216 (number)

81128216 is an even 8-digits composite number following 81128215 and preceding 81128217. In scientific notation, it is written as 8.1128216 × 10^7. The sum of its digits is 29. It has a total of 6 prime factors and 32 positive divisors. There are 35240448 positive integers (up to 81128216) that are relatively prime to 81128216.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-eight thousand two hundred sixteen

Notation

Scientific notation 8.1128216 × 10^7
Engineering notation 8.1128216 × 10^6

Prime Factorization of 81128216

Prime Factorization 2 × 2 × 2 × 17 × 13 × 45887

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20282054
Product of the distinct prime numbers

The prime factorization of 81128216 is 2 × 2 × 2 × 17 × 13 × 45887. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 2, 63, 11, 682, 56, 8822, 1321, 7600, 72820, 639576, 509965, 1457820, 3449476, 37514825, 64618609, 237701381, 956078326, 2497447999, 6392909814

Basic calculations (n = 81128216)

Multiplication

n×y
n×2 162256432
n×3 243384648
n×4 324512864
n×5 405641080

Division

n÷y
n÷2 40564108
n÷3 27042738.666667
n÷3 20282054
n÷5 16225643.2

Exponentiation

ny
n2 6581787431342656
n3 5.3396867239605E+23
n4 4.331992579138E+31
n5 3.5144682967071E+39

Nth Root

y√n
2√n 9007.1202945226
3√n 432.90304638371
4√n 94.905849632794
5√n 38.179864715074

Divisors of 81128216

1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 45887, 91774, 183548, 367096, 596531, 780079, 1193062, 1560158, 2386124, 3120316, 4772248, 6240632, 10141027, 20282054, 40564108, 81128216

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 -81128215
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 81128216 can be divided by 32 positive divisors. The sum of these divisors (counting 81128216) is 1, the average is 0.03125.

Base conversion 81128216

Base System Value
2 Binary 100110101011110101100011000
3 Ternary 12122122201222202
4 Quaternary 10311132230120
5 Quinary 131232100331
6 Senary 12014505332
8 Octal 465365430
10 Decimal 81128216
12 Duodecimal 23205248
16 Hexadecimal 4d5eb18
20 Vigesimal 15710ag
36 Base36 1cauxk

Cryptographic Hash Functions

md5 57a9e5e914fdb252fb7b3f5b9142d9be
sha1 8ecbea0d73b531c202f772b89a04a7e4fd64d566
sha256 e2ef262e4ec8d6c63074999e3f0a7a76c097b44cc444858e5a38d616f4653fac
sha512 4bc2b66abebd6900f5937c0d5361a97c899f655aac5060ab87d2f6fb0dbe9668b821728e00c3cfadd08529134c54fe9e74ee5fa436814cc8031c28efc857d016
ripemd-160 cccef5fb95ec448e4a7531a9320018d2cb12498d

81128216 as geometric shapes

Circle

Radius = n
Diameter 162256432
Circumference 509743614.76889
Area 2.0677295041796E+16

Sphere

Radius = n
Volume 2.2366827445954E+24
Surface area 8.2709180167183E+16
Circumference 509743614.76889

Square

Length = n
Perimeter 324512864
Area 6581787431342656
Diagonal 114732623.35833

Cube

Length = n
Surface area 39490724588055936
Volume 5.3396867239605E+23
Space diagonal 140518192.03942

Equilateral Triangle

Length = n
Perimeter 243384648
Area 2.8499975589259E+15
Altitude 70259096.019711

Triangular Pyramid

Length = n
Surface area 2.8499975589259E+15
Volume 6.2928811532071E+22
Height 38244207.786111