21031618 is an even 8-digits composite number following 21031617
and preceding 21031619 . In scientific notation, it is written as 2.1031618 × 10^7.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 9897216 positive integers (up to 21031618) that are relatively prime to 21031618.
21031618 has 8 divisors, whose sum is 33403212
The reverse of 21031618 is 81613012
Previous prime number is 17
Is Prime? no
Number parity even
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million thirty-one thousand six hundred eighteen
Scientific notation
2.1031618 × 10^7
Engineering notation
2.1031618 × 10^6
Prime Factorization
2 × 17 × 618577
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21031618
Product of the distinct prime numbers
The prime factorization of 21031618 is 2 × 17 × 618577.
Since it has a total of 3 prime factors.
4 , 6 , 23 , 64 , 26 , 996 , 506 , 2585 , 15822 , 9549 , 304350 , 676672 , 6453600 , 5684471 , 65443135 , 58307118 , 489099283 , 280490924 , 9812900478 , 6567861821
n×2
42063236
n×3
63094854
n×4
84126472
n×5
105158090
n÷2
10515809
n÷3
7010539.3333333
n÷3
5257904.5
n÷5
4206323.6
n2
442328955697924
n3
9.3028936265777E+21
n4
1.9565490504882E+29
n5
4.114939222813E+36
2 √n
4586.0242040356
3 √n
276.03081116505
4 √n
67.720190519782
5 √n
29.145703131256
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21031617
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031618 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031618) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110101011000010
3
Ternary
1110120111221211
4
Quaternary
1100032223002
5
Quinary
20341002433
6
Senary
2030440334
8
Octal
120165302
10
Decimal
21031618
12
Duodecimal
70630aa
16
Hexadecimal
140eac2
20
Vigesimal
6b8j0i
36
Base36
cis3m
md5
472e73c3b6cad5e52d3f272c7a92d6f6
sha1
dc230db2bc19d20fff5bba19f33a94671c86f4ab
sha256
bd11548dde2e2dab3856bb5f436e76726232cc13f898f8b3676219f075457bee
sha512
857dc4130527a6e2735d913e6244dc64cc2a4c7aff5c07f35f14793df9ffe9b3f3bba7c9327174693bb1469d5a59c9524398b44f9927f8ed0c62df07e7fb64ca
ripemd-160
1572db3a34caf89577ac831f84bd86c56552fdbb
Diameter
42063236
Circumference
132145553.20381
Area
1.3896173976906E+15
Volume
3.8967869699178E+22
Surface area
5.5584695907626E+15
Circumference
132145553.20381
Perimeter
84126472
Area
442328955697924
Diagonal
29743199.41425
Surface area
2653973734187544
Volume
9.3028936265777E+21
Space diagonal
36427830.94138
Perimeter
63094854
Area
1.9153405623192E+14
Altitude
18213915.47069
Surface area
1.9153405623192E+14
Volume
1.0963565280017E+21
Height
9914399.80475