81488897 is an odd 8-digits composite number following 81488896
and preceding 81488898 . In scientific notation, it is written as 8.1488897 × 10^7.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 69802272 positive integers (up to 81488897) that are relatively prime to 81488897.
81488897 has 8 divisors, whose sum is 93190656
The reverse of 81488897 is 79888418
Previous prime number is 2153
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 53
Digital Root 8
Name
eighty-one million four hundred eighty-eight thousand eight hundred ninety-seven
Scientific notation
8.1488897 × 10^7
Engineering notation
8.1488897 × 10^6
Prime Factorization
7 × 2153 × 5407
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81488897
Product of the distinct prime numbers
The prime factorization of 81488897 is 7 × 2153 × 5407.
Since it has a total of 3 prime factors.
3 , 7 , 25 , 21 , 162 , 998 , 3017 , 9127 , 32992 , 51849 , 411358 , 791768 , 7958423 , 3895705 , 91355565 , 1947425 , 244486208 , 7865299 , 6632716600 , 5277199909
n×2
162977794
n×3
244466691
n×4
325955588
n×5
407444485
n÷2
40744448.5
n÷3
27162965.666667
n÷3
20372224.25
n÷5
16297779.4
n2
6640440334276609
n3
5.4112215843451E+23
n4
4.4095447833088E+31
n5
3.5932894066394E+39
2 √n
9027.1200833932
3 √n
433.54363355752
4 √n
95.011157678418
5 √n
38.213752624117
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
-81488896
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 81488897 can be divided by 8 positive divisors.
The sum of these divisors (counting 81488897) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110110110110000000001
3
Ternary
12200100001202022
4
Quaternary
10312312300001
5
Quinary
131330121042
6
Senary
12030331225
8
Octal
466666001
10
Decimal
81488897
12
Duodecimal
23359b15
16
Hexadecimal
4db6c01
20
Vigesimal
159624h
36
Base36
1cil8h
md5
799c9b6fd99e415e8c8cdcadbe26f8e0
sha1
b93ed8c2edd1f46d41a5f49ec6444fe54668a540
sha256
e378d8672f0a6b6ece823c26d70490f3bc7eccede6fd5a4de2a27221e5bbcf97
sha512
37b20c841a9b55f57b3e312eac9b676854ed3e6dcfad53b0ec37a801b40d51e6936ad104847140b05f075a836ef8f828ffa79c6d147366e573a50a3069a13422
ripemd-160
c1a2cbe99be1b1c3898e4658112b277e1cc4519a
Diameter
162977794
Circumference
512009840.32867
Area
2.0861558570765E+16
Volume
2.2666471968434E+24
Surface area
8.3446234283059E+16
Circumference
512009840.32867
Perimeter
325955588
Area
6640440334276609
Diagonal
115242703.32022
Surface area
39842642005659654
Volume
5.4112215843451E+23
Space diagonal
141142909.85675
Perimeter
244466691
Area
2.8753950108992E+15
Altitude
70571454.928374
Surface area
2.8753950108992E+15
Volume
6.3771857946557E+22
Height
38414234.440075