81798889 is an odd 8-digits composite number following 81798888
and preceding 81798890 . In scientific notation, it is written as 8.1798889 × 10^7.
The sum of its digits is 58. It has a total of 2 prime factors and 4 positive divisors.
There are 81174340 positive integers (up to 81798889) that are relatively prime to 81798889.
81798889 has 4 divisors, whose sum is 82423440
The reverse of 81798889 is 98889718
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 58
Digital Root 4
Name
eighty-one million seven hundred ninety-eight thousand eight hundred eighty-nine
Scientific notation
8.1798889 × 10^7
Engineering notation
8.1798889 × 10^6
Prime Factorization
131 × 624419
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81798889
Product of the distinct prime numbers
The prime factorization of 81798889 is 131 × 624419.
Since it has a total of 2 prime factors.
3 , 4 , 8 , 91 , 448 , 14 , 9932 , 4221 , 71236 , 17721 , 2678 , 44865 , 628613 , 1513239 , 10894258 , 74656042 , 606067768 , 967625719 , 9442043115 , 4892876144
n×2
163597778
n×3
245396667
n×4
327195556
n×5
408994445
n÷2
40899444.5
n÷3
27266296.333333
n÷3
20449722.25
n÷5
16359777.8
n2
6691058241634321
n3
5.4732113039998E+23
n4
4.4770260392943E+31
n5
3.6621575603834E+39
2 √n
9044.273823807
3 √n
434.09268586109
4 √n
95.101387076146
5 √n
38.242782280386
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81798888
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81798889 can be divided by 4 positive divisors.
The sum of these divisors (counting 81798889) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000000010011011101001
3
Ternary
12200220210222111
4
Quaternary
10320002123221
5
Quinary
131420031024
6
Senary
12041122321
8
Octal
470023351
10
Decimal
81798889
12
Duodecimal
234893a1
16
Hexadecimal
4e026e9
20
Vigesimal
15b4h49
36
Base36
1cp8fd
md5
185c5e0e67f68200101adbf5f3118e94
sha1
270f4afe56910b73cf25e4cc889267b53db763fe
sha256
97f5377ace05acca7c257b8efd0a14d4c4d8f6e67711957e3dc1bae4faf0cb3d
sha512
83911df440d7b6abb8865862f7503e81c8941052c6f2bf62d71e6fab9782c68a8000d420e064a843caae5538e3cbff463678204b0be1899b43616cadacc25be8
ripemd-160
5720bc4b8a95051b77fcd64ba726d26a036b91d2
Diameter
163597778
Circumference
513957577.50841
Area
2.102057941666E+16
Volume
2.2926133898921E+24
Surface area
8.4082317666639E+16
Circumference
513957577.50841
Perimeter
327195556
Area
6691058241634321
Diagonal
115681098.21085
Surface area
40146349449805926
Volume
5.4732113039998E+23
Space diagonal
141679831.75069
Perimeter
245396667
Area
2.8973132077283E+15
Altitude
70839915.875343
Surface area
2.8973132077283E+15
Volume
6.4502413798752E+22
Height
38560366.070284