81128840 (number)

81128840 is an even 8-digits composite number following 81128839 and preceding 81128841. In scientific notation, it is written as 8.1128840 × 10^7. The sum of its digits is 32. It has a total of 6 prime factors and 32 positive divisors. There are 29601792 positive integers (up to 81128840) that are relatively prime to 81128840.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-eight thousand eight hundred forty

Notation

Scientific notation 8.1128840 × 10^7
Engineering notation 8.1128840 × 10^6

Prime Factorization of 81128840

Prime Factorization 2 × 2 × 2 × 65 × 89 × 1753

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20282210
Product of the distinct prime numbers

The prime factorization of 81128840 is 2 × 2 × 2 × 65 × 89 × 1753. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 3, 53, 34, 223, 604, 616, 6439, 20863, 21388, 26258, 177407, 887431, 1730443, 47740645, 47975710, 29103141, 718781817, 72192070, 6712820833

Basic calculations (n = 81128840)

Multiplication

n×y
n×2 162257680
n×3 243386520
n×4 324515360
n×5 405644200

Division

n÷y
n÷2 40564420
n÷3 27042946.666667
n÷3 20282210
n÷5 16225768

Exponentiation

ny
n2 6581888679745600
n3 5.3398099359689E+23
n4 4.3321258592563E+31
n5 3.5146034569547E+39

Nth Root

y√n
2√n 9007.154933718
3√n 432.90415627626
4√n 94.906032125034
5√n 38.179923447198

Divisors of 81128840

1, 2, 4, 8, 65, 89, 130, 178, 260, 356, 520, 712, 1753, 3506, 5785, 7012, 11570, 14024, 23140, 46280, 113945, 156017, 227890, 312034, 455780, 624068, 911560, 1248136, 10141105, 20282210, 40564420, 81128840

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 -81128839
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 81128840 can be divided by 32 positive divisors. The sum of these divisors (counting 81128840) is 1, the average is 0.03125.

Base conversion 81128840

Base System Value
2 Binary 100110101011110110110001000
3 Ternary 12122122202211212
4 Quaternary 10311132312020
5 Quinary 131232110330
6 Senary 12014512252
8 Octal 465366610
10 Decimal 81128840
12 Duodecimal 23205688
16 Hexadecimal 4d5ed88
20 Vigesimal 1571220
36 Base36 1cavew

Cryptographic Hash Functions

md5 d1cf99f207c45316fb7e4df97c3dc670
sha1 a0cb8169633c6acd8f50b62d0f2984d6e6a12274
sha256 bb3d7e827bf63a978d92bd98cf1294b9259efc917063fc96bd05de9df4b6a737
sha512 1e2a9394e89f55a6583a88d5bb4284fa69f7666ae8d89ce49d8bcb26eb09b6ebcfd38adedd0d732466066d43a335a7810a5b3b2441a5f52957af4eb22198f8a9
ripemd-160 4d12496c276443820ce6d7043adf0429a388e903

81128840 as geometric shapes

Circle

Radius = n
Diameter 162257680
Circumference 509747535.47652
Area 2.0677613123035E+16

Sphere

Radius = n
Volume 2.2367343555208E+24
Surface area 8.2710452492138E+16
Circumference 509747535.47652

Square

Length = n
Perimeter 324515360
Area 6581888679745600
Diagonal 114733505.8276

Cube

Length = n
Surface area 39491332078473600
Volume 5.3398099359689E+23
Space diagonal 140519272.83913

Equilateral Triangle

Length = n
Perimeter 243386520
Area 2.8500414007705E+15
Altitude 70259636.419563

Triangular Pyramid

Length = n
Surface area 2.8500414007705E+15
Volume 6.2930263599515E+22
Height 38244501.942532