81444893 is an odd 8-digits prime number following 81444892
and preceding 81444894 . In scientific notation, it is written as 8.1444893 × 10^7.
The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors.
There are 81444892 positive integers (up to 81444893) that are relatively prime to 81444893.
81444893 has 2 divisors, whose sum is 81444894
The reverse of 81444893 is 39844418
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
eighty-one million four hundred forty-four thousand eight hundred ninety-three
Scientific notation
8.1444893 × 10^7
Engineering notation
8.1444893 × 10^6
Prime Factorization
81444893
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81444893
Product of the distinct prime numbers
The prime factorization of 81444893 is 81444893.
Since it has a total of 1 prime factors.
5 , 1 , 2 , 28 , 217 , 148 , 431 , 6823 , 65739 , 99030 , 452722 , 524498 , 9781882 , 9111561 , 65196511 , 27754911 , 301201190 , 686371898 , 3926124426 , 617031289
n×2
162889786
n×3
244334679
n×4
325779572
n×5
407224465
n÷2
40722446.5
n÷3
27148297.666667
n÷3
20361223.25
n÷5
16288978.6
n2
6633270595781449
n3
5.4024601391347E+23
n4
4.4000278796859E+31
n5
3.5835979985803E+39
2 √n
9024.6824320859
3 √n
433.46558166022
4 √n
94.998328575222
5 √n
38.209624647505
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81444894
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40722447
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9024.6824874895
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754435
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81444893 can be divided by 2 positive divisors.
The sum of these divisors (counting 81444893) is 81444894, the average is 40722447.
Base
System
Value
2
Binary
100110110101100000000011101
3
Ternary
12200020211101112
4
Quaternary
10312230000131
5
Quinary
131322214033
6
Senary
12025351405
8
Octal
466540035
10
Decimal
81444893
12
Duodecimal
23338565
16
Hexadecimal
4dac01d
20
Vigesimal
1590c4d
36
Base36
1chna5
md5
cca1069869ab4a62b9bd488e9cde9d90
sha1
b3ed92a816015e4b743fb49a6994712dc09fd439
sha256
f4bfcdc07fe91cc7f702faab895f141372cf0789b59c048125dee43ec64befc7
sha512
dc03c32b696b4a6e6fb0c94799d2dc66941519c57f4ed0d973928dfe29c84c05580a323e961950edd2589948fb92ed159627b2e0bac99a417380deee252533d6
ripemd-160
26a354637e5d472292c4d530cc266cfd7bb0c2aa
Diameter
162889786
Circumference
511733355.04241
Area
2.083903417298E+16
Volume
2.2629772112556E+24
Surface area
8.3356136691921E+16
Circumference
511733355.04241
Perimeter
325779572
Area
6633270595781449
Diagonal
115180472.26663
Surface area
39799623574688694
Volume
5.4024601391347E+23
Space diagonal
141066692.69301
Perimeter
244334679
Area
2.8722904230615E+15
Altitude
70533346.346505
Surface area
2.8722904230615E+15
Volume
6.3668603324536E+22
Height
38393490.755542