81128577 is an odd 8-digits composite number following 81128576
and preceding 81128578 . In scientific notation, it is written as 8.1128577 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 53580032 positive integers (up to 81128577) that are relatively prime to 81128577.
81128577 has 8 divisors, whose sum is 109182816
The reverse of 81128577 is 77582118
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
eighty-one million one hundred twenty-eight thousand five hundred seventy-seven
Scientific notation
8.1128577 × 10^7
Engineering notation
8.1128577 × 10^6
Prime Factorization
3 × 107 × 252737
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81128577
Product of the distinct prime numbers
The prime factorization of 81128577 is 3 × 107 × 252737.
Since it has a total of 3 prime factors.
10 , 2 , 74 , 67 , 531 , 990 , 317 , 709 , 4962 , 70695 , 931475 , 93980 , 2125435 , 1492365 , 19398186 , 83196046 , 727003826 , 666664891 , 2910850210 , 507331176
n×2
162257154
n×3
243385731
n×4
324514308
n×5
405642885
n÷2
40564288.5
n÷3
27042859
n÷3
20282144.25
n÷5
16225715.4
n2
6581846006044929
n3
5.3397580050356E+23
n4
4.332069684729E+31
n5
3.514546489869E+39
2 √n
9007.1403342015
3 √n
432.90368848571
4 √n
94.905955209363
5 √n
38.179898693157
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81128576
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81128577 can be divided by 8 positive divisors.
The sum of these divisors (counting 81128577) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101011110110010000001
3
Ternary
12122122202111010
4
Quaternary
10311132302001
5
Quinary
131232103302
6
Senary
12014511133
8
Octal
465366201
10
Decimal
81128577
12
Duodecimal
232054a9
16
Hexadecimal
4d5ec81
20
Vigesimal
157118h
36
Base36
1cav7l
md5
144d10309e0781a261c988549cecd074
sha1
69ff3c17544c113c8424cff6f19607233d804d48
sha256
81c06a0976e5389a0e2636507ca8cfb15e19c7a1211337653f715d3b943463e9
sha512
6aa7ef4497b08fd69b226b09cc051705043c695d237070e51f5be6de55d1715c44929fc683629bbc2de3805cc69153e1bf962beb51b2440b453acccbba89168f
ripemd-160
300d7d0c36a1b8bcfbb21afb84505ba9dc0fc933
Diameter
162257154
Circumference
509745882.99879
Area
2.067747905965E+16
Volume
2.2367126027423E+24
Surface area
8.27099162386E+16
Circumference
509745882.99879
Perimeter
324514308
Area
6581846006044929
Diagonal
114733133.88943
Surface area
39491076036269574
Volume
5.3397580050356E+23
Space diagonal
140518817.30976
Perimeter
243385731
Area
2.850022922516E+15
Altitude
70259408.654882
Surface area
2.850022922516E+15
Volume
6.2929651587597E+22
Height
38244377.963143