81888968 is an even 8-digits composite number following 81888967
and preceding 81888969 . In scientific notation, it is written as 8.1888968 × 10^7.
The sum of its digits is 56. It has a total of 6 prime factors and 32 positive divisors.
There are 35027520 positive integers (up to 81888968) that are relatively prime to 81888968.
81888968 has 32 divisors, whose sum is 175815360
The reverse of 81888968 is 86988818
Previous prime number is 683
Is Prime? no
Number parity even
Number length 8
Sum of Digits 56
Digital Root 2
Name
eighty-one million eight hundred eighty-eight thousand nine hundred sixty-eight
Scientific notation
8.1888968 × 10^7
Engineering notation
8.1888968 × 10^6
Prime Factorization
2 × 2 × 2 × 7 × 683 × 2141
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
20472242
Product of the distinct prime numbers
The prime factorization of 81888968 is 2 × 2 × 2 × 7 × 683 × 2141.
Since it has a total of 6 prime factors.
10 , 3 , 69 , 16 , 259 , 240 , 5581 , 9337 , 55531 , 47106 , 153467 , 127905 , 8558218 , 6372634 , 50048587 , 39272212 , 61901711 , 218940808 , 1902864627 , 558726078
n×2
163777936
n×3
245666904
n×4
327555872
n×5
409444840
n÷2
40944484
n÷3
27296322.666667
n÷3
20472242
n÷5
16377793.6
n2
6705803080105024
n3
5.4913129384102E+23
n4
4.4967794949146E+31
n5
3.6823663216212E+39
2 √n
9049.2523448073
3 √n
434.25197201073
4 √n
95.127558282589
5 √n
38.251201355992
1 , 2 , 4 , 7 , 8 , 14 , 28 , 56 , 683 , 1366 , 2141 , 2732 , 4282 , 4781 , 5464 , 8564 , 9562 , 14987 , 17128 , 19124 , 29974 , 38248 , 59948 , 119896 , 1462303 , 2924606 , 5849212 , 10236121 , 11698424 , 20472242 , 40944484 , 81888968
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
-81888967
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 81888968 can be divided by 32 positive divisors.
The sum of these divisors (counting 81888968) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100111000011000011011001000
3
Ternary
12201002101112202
4
Quaternary
10320120123020
5
Quinary
131430421333
6
Senary
12043055332
8
Octal
470303310
10
Decimal
81888968
12
Duodecimal
23511548
16
Hexadecimal
4e186c8
20
Vigesimal
15bg288
36
Base36
1cr5xk
md5
62136500d2d1351c7493cfa990bec685
sha1
bde324278722d9180007981245047cf05251fc46
sha256
c75bb8e89cf6feea14b0886e5036d8f9745f8c22f6ca35d4d595083658c63056
sha512
b37196f4274e90ebde8e4da737285799ddb0373fb6f69a67320fd68731ffb1588421b194bb2ceaab8a1b8ba15937d701d31497e3ffe9de26cf74f61b36397e5f
ripemd-160
3cb4d9842d7b7cf9ce75faa5bca2103bb2d6adfa
Diameter
163777936
Circumference
514523560.5577
Area
2.1066901692878E+16
Volume
2.3001957847829E+24
Surface area
8.4267606771511E+16
Circumference
514523560.5577
Perimeter
327555872
Area
6705803080105024
Diagonal
115808489.15434
Surface area
40234818480630144
Volume
5.4913129384102E+23
Space diagonal
141835853.15538
Perimeter
245666904
Area
2.9036979100734E+15
Altitude
70917926.577691
Surface area
2.9036979100734E+15
Volume
6.4715743606122E+22
Height
38602829.718112