90131818 is an even 8-digits composite number following 90131817
and preceding 90131819 . In scientific notation, it is written as 9.0131818 × 10^7.
The sum of its digits is 31. It has a total of 5 prime factors and 32 positive divisors.
There are 36979200 positive integers (up to 90131818) that are relatively prime to 90131818.
90131818 has 32 divisors, whose sum is 161215488
The reverse of 90131818 is 81813109
Previous prime number is 97
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
ninety million one hundred thirty-one thousand eight hundred eighteen
Scientific notation
9.0131818 × 10^7
Engineering notation
9.0131818 × 10^6
Prime Factorization
2 × 7 × 31 × 97 × 2141
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
90131818
Product of the distinct prime numbers
The prime factorization of 90131818 is 2 × 7 × 31 × 97 × 2141.
Since it has a total of 5 prime factors.
10 , 2 , 30 , 48 , 274 , 458 , 9002 , 6988 , 11254 , 34447 , 846316 , 383017 , 8905399 , 9298880 , 67414894 , 10587160 , 792165214 , 698333702 , 8330759043 , 2286133919
n×2
180263636
n×3
270395454
n×4
360527272
n×5
450659090
n÷2
45065909
n÷3
30043939.333333
n÷3
22532954.5
n÷5
18026363.6
n2
8123744615985124
n3
7.3220787120645E+23
n4
6.5995226585747E+31
n5
5.9482697514953E+39
2 √n
9493.777857102
3 √n
448.35915674545
4 √n
97.43601930037
5 √n
38.992010268772
1 , 2 , 7 , 14 , 31 , 62 , 97 , 194 , 217 , 434 , 679 , 1358 , 2141 , 3007 , 4282 , 6014 , 14987 , 21049 , 29974 , 42098 , 66371 , 132742 , 207677 , 415354 , 464597 , 929194 , 1453739 , 2907478 , 6437987 , 12875974 , 45065909 , 90131818
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
-90131817
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 90131818 can be divided by 32 positive divisors.
The sum of these divisors (counting 90131818) is 1, the average is 0.03125.
Base
System
Value
2
Binary
101010111110100110101101010
3
Ternary
20021121011121111
4
Quaternary
11113310311222
5
Quinary
141033204233
6
Senary
12535500534
8
Octal
527646552
10
Decimal
90131818
12
Duodecimal
2622774a
16
Hexadecimal
55f4d6a
20
Vigesimal
18369ai
36
Base36
1hnu5m
md5
7391f4c0b57c6a95a29a5f3b27d07f51
sha1
c413d790ae8c288e8d2bf7fdddb8d887ac2797b4
sha256
964261ceb6d1e2d8a633c6e1e76a52fda2b150c00b725bd1870aabcd5335a200
sha512
74d1f863a571ce5f680565737aa59baca8677d7316ec386177d744aa4cb5e340e35da814c366f6ddca93cd3eb2abb47080a5e7040e47ab66dca2ec6df44ec041
ripemd-160
78cb3e9be440ed693664d52c9d1450c4aae8dc6e
Diameter
180263636
Circumference
566314914.56698
Area
2.5521496405218E+16
Volume
3.0670651587771E+24
Surface area
1.0208598562087E+17
Circumference
566314914.56698
Perimeter
360527272
Area
8123744615985124
Diagonal
127465639.41694
Surface area
48742467695910744
Volume
7.3220787120645E+23
Space diagonal
156112888.15455
Perimeter
270395454
Area
3.5176846056501E+15
Altitude
78056444.077276
Surface area
3.5176846056501E+15
Volume
8.6291525161375E+22
Height
42488546.472314