81121489 is an odd 8-digits prime number following 81121488
and preceding 81121490 . In scientific notation, it is written as 8.1121489 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 81121488 positive integers (up to 81121489) that are relatively prime to 81121489.
81121489 has 2 divisors, whose sum is 81121490
The reverse of 81121489 is 98412118
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 34 Digital Root 7
Name
eighty-one million one hundred twenty-one thousand four hundred eighty-nine
Scientific notation
8.1121489 × 10^7
Engineering notation
8.1121489 × 10^6
Prime Factorization
81121489
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81121489 Product of the distinct prime numbers
The prime factorization of 81121489 is 81121489.
Since it has a total of 1 prime factors.
1 , 2 , 79 , 10 , 678 , 122 , 2276 , 2830 , 76697 , 86855 , 857289 , 733614 , 3254731 , 4195427 , 52648722 , 40652048 , 304926678 , 499836856 , 7454752010 , 5927073698
n×2
162242978
n×3
243364467
n×4
324485956
n×5
405607445
n÷2
40560744.5
n÷3
27040496.333333
n÷3
20280372.25
n÷5
16224297.8
n2
6580695977577121
n3
5.3383585635737E+23
n4
4.33055595493E+31
n5
3.5130114726174E+39
2 √n9006.7468599933
3 √n432.89108088256
4 √n94.903882217712
5 √n38.179231533472
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81121490 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40560745 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9006.7469155073 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999753456 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81121489 can be divided by 2 positive divisors.
The sum of these divisors (counting 81121489) is 81121490, the average is 40560745.
Base
System
Value
2
Binary
100110101011101000011010001
3
Ternary
12122122101202121
4
Quaternary
10311131003101
5
Quinary
131231341424
6
Senary
12014414241
8
Octal
465350321
10
Decimal
81121489
12
Duodecimal
23201381
16
Hexadecimal
4d5d0d1
20
Vigesimal
15703e9
36
Base36
1capqp
md5
63c8e56f09c17568ccdedb091fd7248a
sha1
5b0bdd60c00f89ba31134b75530482ed9e419e87
sha256
d2b8c339ce91df8347f0332a40eadca0a84bf551a84d95a469dbd523de7bf7fa
sha512
2becffd6b6a5a43c62f928855eb6e75e7f93ccf80c20bba0e908ceb154d421ef0b6b03848b9609e3496e559010d634ace0a9cdf8a712dd6970dd066b32946d41
ripemd-160
3d542f275140dbf3f1369cce320cce014f6b6e88
Diameter
162242978
Circumference
509701347.78133
Area
2.0673866138664E+16
Volume
2.2361264060735E+24
Surface area
8.2695464554657E+16
Circumference
509701347.78133
Perimeter
324485956
Area
6580695977577121
Diagonal
114723109.9437
Surface area
39484175865462726
Volume
5.3383585635737E+23
Space diagonal
140506540.53364
Perimeter
243364467
Area
2.8495249455819E+15
Altitude
70253270.26682
Surface area
2.8495249455819E+15
Volume
6.2913159011804E+22
Height
38241036.6479