81275892 is an even 8-digits composite number following 81275891
and preceding 81275893 . In scientific notation, it is written as 8.1275892 × 10^7.
The sum of its digits is 42. It has a total of 4 prime factors and 12 positive divisors.
There are 27091960 positive integers (up to 81275892) that are relatively prime to 81275892.
81275892 has 12 divisors, whose sum is 189643776
The reverse of 81275892 is 29857218
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million two hundred seventy-five thousand eight hundred ninety-two
Scientific notation
8.1275892 × 10^7
Engineering notation
8.1275892 × 10^6
Prime Factorization
2 × 2 × 3 × 6772991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40637946
Product of the distinct prime numbers
The prime factorization of 81275892 is 2 × 2 × 3 × 6772991.
Since it has a total of 4 prime factors.
3 , 10 , 28 , 55 , 413 , 882 , 2917 , 3647 , 55860 , 93859 , 396401 , 948441 , 393096 , 5897829 , 14912629 , 90930677 , 404088952 , 797334098 , 459343922 , 167064965
n×2
162551784
n×3
243827676
n×4
325103568
n×5
406379460
n÷2
40637946
n÷3
27091964
n÷3
20318973
n÷5
16255178.4
n2
6605770620395664
n3
5.3688989952005E+23
n4
4.3636205489283E+31
n5
3.5465715246367E+39
2 √n
9015.3143040052
3 √n
433.16555529791
4 √n
94.949008967999
5 √n
38.193754207983
1 , 2 , 3 , 4 , 6 , 12 , 6772991 , 13545982 , 20318973 , 27091964 , 40637946 , 81275892
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
-81275891
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 81275892 can be divided by 12 positive divisors.
The sum of these divisors (counting 81275892) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110110000010101111110100
3
Ternary
12122221020120020
4
Quaternary
10312002233310
5
Quinary
131301312032
6
Senary
12022005140
8
Octal
466025764
10
Decimal
81275892
12
Duodecimal
232767b0
16
Hexadecimal
4d82bf4
20
Vigesimal
157j9ec
36
Base36
1ce0vo
md5
55e6611bdcfba6262b3a85cf14467292
sha1
ecc976abbc72458a0e277f4dc69953da870ed81f
sha256
ea29769ffad687b8dc93e1541f4a993628df81dbacf0b3951285c1ff946d0c55
sha512
88cb0278b0954699a5b77b4da8a005c108c563289e5073a0da8355a46343d9aa83d6bf08569e3986836aefce94feeff6e7550626310b2e994bdff9f261782fe4
ripemd-160
8299e9811954ebbfc6b902d24685baa4ff5c6e78
Diameter
162551784
Circumference
510671490.44231
Area
2.0752640452334E+16
Volume
2.2489191521583E+24
Surface area
8.3010561809337E+16
Circumference
510671490.44231
Perimeter
325103568
Area
6605770620395664
Diagonal
114941468.76037
Surface area
39634623722373984
Volume
5.3688989952005E+23
Space diagonal
140773974.37448
Perimeter
243827676
Area
2.8603825844178E+15
Altitude
70386987.18724
Surface area
2.8603825844178E+15
Volume
6.3273081450199E+22
Height
38313822.920124