81554744 is an even 8-digits composite number following 81554743
and preceding 81554745 . In scientific notation, it is written as 8.1554744 × 10^7.
The sum of its digits is 38. It has a total of 5 prime factors and 16 positive divisors.
There are 40596832 positive integers (up to 81554744) that are relatively prime to 81554744.
81554744 has 16 divisors, whose sum is 153592200
The reverse of 81554744 is 44745518
Previous prime number is 227
Is Prime? no
Number parity even
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million five hundred fifty-four thousand seven hundred forty-four
Scientific notation
8.1554744 × 10^7
Engineering notation
8.1554744 × 10^6
Prime Factorization
2 × 2 × 2 × 227 × 44909
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
20388686
Product of the distinct prime numbers
The prime factorization of 81554744 is 2 × 2 × 2 × 227 × 44909.
Since it has a total of 5 prime factors.
6 , 1 , 70 , 59 , 571 , 991 , 6078 , 7208 , 63402 , 40859 , 361416 , 111032 , 2189682 , 5539813 , 14600191 , 92350068 , 737144274 , 526899232 , 8890622671 , 5740395948
n×2
163109488
n×3
244664232
n×4
326218976
n×5
407773720
n÷2
40777372
n÷3
27184914.666667
n÷3
20388686
n÷5
16310948.8
n2
6651176268905536
n3
5.4243497790947E+23
n4
4.4238145760052E+31
n5
3.6078306524957E+39
2 √n
9030.766523391
3 √n
433.66037691303
4 √n
95.030345276606
5 √n
38.219926343853
1 , 2 , 4 , 8 , 227 , 454 , 908 , 1816 , 44909 , 89818 , 179636 , 359272 , 10194343 , 20388686 , 40777372 , 81554744
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
-81554743
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 81554744 can be divided by 16 positive divisors.
The sum of these divisors (counting 81554744) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111000110110100111000
3
Ternary
12200110102002002
4
Quaternary
10313012310320
5
Quinary
131334222434
6
Senary
12032000132
8
Octal
467066470
10
Decimal
81554744
12
Duodecimal
23390048
16
Hexadecimal
4dc6d38
20
Vigesimal
159e6h4
36
Base36
1ck01k
md5
a212a526c1d6af97e119b5d1f1584d0f
sha1
5e35d2204846a0a5f05841d53868f96ee7b582ef
sha256
72b68c4c028a5ba1cb91e4fab58015f78c53031c6d74dc39232c95fb6c98ab75
sha512
d197bed3601fbe2bf724d5433f8ba1f3484c1e95a60e70bbfd7e5203c5ed9d31089f5df82ce907288837fcb26b10c1bfe657bb5cfd16ffe0179215ad7ca708e4
ripemd-160
f60bd9fe8beacaaf61157aade482d91be247242b
Diameter
163109488
Circumference
512423569.23159
Area
2.0895286504124E+16
Volume
2.2721463222007E+24
Surface area
8.3581146016498E+16
Circumference
512423569.23159
Perimeter
326218976
Area
6651176268905536
Diagonal
115335825.04067
Surface area
39907057613433216
Volume
5.4243497790947E+23
Space diagonal
141256960.20627
Perimeter
244664232
Area
2.8800438069602E+15
Altitude
70628480.103137
Surface area
2.8800438069602E+15
Volume
6.3926575205426E+22
Height
38445275.013555