81998944 is an even 8-digits composite number following 81998943
and preceding 81998945 . In scientific notation, it is written as 8.1998944 × 10^7.
The sum of its digits is 52. It has a total of 6 prime factors and 12 positive divisors.
There are 40999456 positive integers (up to 81998944) that are relatively prime to 81998944.
81998944 has 12 divisors, whose sum is 161435484
The reverse of 81998944 is 44989918
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 52
Digital Root 7
Name
eighty-one million nine hundred ninety-eight thousand nine hundred forty-four
Scientific notation
8.1998944 × 10^7
Engineering notation
8.1998944 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2562467
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
5124934
Product of the distinct prime numbers
The prime factorization of 81998944 is 2 × 2 × 2 × 2 × 2 × 2562467.
Since it has a total of 6 prime factors.
7 , 5 , 86 , 88 , 899 , 612 , 6971 , 7089 , 98412 , 69165 , 805624 , 282170 , 3344349 , 6880734 , 44455194 , 86255702 , 903781505 , 858867617 , 3132316155 , 7276135562
n×2
163997888
n×3
245996832
n×4
327995776
n×5
409994720
n÷2
40999472
n÷3
27332981.333333
n÷3
20499736
n÷5
16399788.8
n2
6723826817115136
n3
5.5134669864232E+23
n4
4.5209847066557E+31
n5
3.7071597178591E+39
2 √n
9055.3268301039
3 √n
434.44628362071
4 √n
95.159481031077
5 √n
38.261470031282
1 , 2 , 4 , 8 , 16 , 32 , 2562467 , 5124934 , 10249868 , 20499736 , 40999472 , 81998944
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81998943
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81998944 can be divided by 12 positive divisors.
The sum of these divisors (counting 81998944) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100111000110011010001100000
3
Ternary
12201021222101221
4
Quaternary
10320303101200
5
Quinary
131442431234
6
Senary
12045304424
8
Octal
470632140
10
Decimal
81998944
12
Duodecimal
23565114
16
Hexadecimal
4e33460
20
Vigesimal
15c9h74
36
Base36
1ctisg
md5
93d4f88bbbaefaf7cd5f5e11840fdb98
sha1
a8fea6513afe6105fba8094ff325ab09d95aca79
sha256
0393a47fa9e4d3fa79914f87d8bc8fa6ff5663c4e2b98bf01900b2b87db1647a
sha512
b180de7625c1b15c7985ccd723f6a7751f7b6ae3eed4de54733360c9b9b06e47368e03f8f37eb20959ed97cd2211af6f5aff38d84449d29d1f67f4c2c9961e65
ripemd-160
99d3ad06d97f3b903e4130f5ffca15acb6aab711
Diameter
163997888
Circumference
515214560.14504
Area
2.1123524932659E+16
Volume
2.3094756507143E+24
Surface area
8.4494099730636E+16
Circumference
515214560.14504
Perimeter
327995776
Area
6723826817115136
Diagonal
115964018.70507
Surface area
40342960902690816
Volume
5.5134669864232E+23
Space diagonal
142026337.175
Perimeter
245996832
Area
2.9115024171344E+15
Altitude
71013168.587498
Surface area
2.9115024171344E+15
Volume
6.49768315658E+22
Height
38654672.901691