21381837 is an odd 8-digits composite number following 21381836
and preceding 21381838 . In scientific notation, it is written as 2.1381837 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 14231040 positive integers (up to 21381837) that are relatively prime to 21381837.
21381837 has 8 divisors, whose sum is 28556160
The reverse of 21381837 is 73818312
Previous prime number is 641
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million three hundred eighty-one thousand eight hundred thirty-seven
Scientific notation
2.1381837 × 10^7
Engineering notation
2.1381837 × 10^6
Prime Factorization
3 × 641 × 11119
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21381837
Product of the distinct prime numbers
The prime factorization of 21381837 is 3 × 641 × 11119.
Since it has a total of 3 prime factors.
10 , 10 , 36 , 26 , 937 , 473 , 3948 , 7965 , 53537 , 28955 , 210644 , 205072 , 9401985 , 5336809 , 49386322 , 94287374 , 431744145 , 45480125 , 8802081808 , 3647166136
n×2
42763674
n×3
64145511
n×4
85527348
n×5
106909185
n÷2
10690918.5
n÷3
7127279
n÷3
5345459.25
n÷5
4276367.4
n2
457182953494569
n3
9.7754113907995E+21
n4
2.0901625296602E+29
n5
4.4691514512701E+36
2 √n
4624.0498483472
3 √n
277.55454166955
4 √n
68.000366530977
5 √n
29.242129959432
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
-21381836
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 21381837 can be divided by 8 positive divisors.
The sum of these divisors (counting 21381837) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001100100001011001101
3
Ternary
1111020022100220
4
Quaternary
1101210023031
5
Quinary
20433204322
6
Senary
2042141553
8
Octal
121441315
10
Decimal
21381837
12
Duodecimal
71b18b9
16
Hexadecimal
14642cd
20
Vigesimal
6dcebh
36
Base36
cqabx
md5
67bcc853f5ea60c88e481da3322e304f
sha1
a4dc17f08fc0ee3aa66b6648c226d73b2c2435be
sha256
3378c0da4b0248bef5fbfeb1f80e3a0b33cc99814758fc4821f4fff4ea019a44
sha512
8fc5887b5ff875538e802a7af13018c4e3c6da2360a765013cd9aa3bdf7a374f45a1b67e470807378ac0602bbdee7b7103c03bbe6930285d93e243b210d934a6
ripemd-160
de3b511871234f24c444d4097afe52e43b0f8efe
Diameter
42763674
Circumference
134346044.07891
Area
1.436282608045E+15
Volume
4.0947147481538E+22
Surface area
5.7451304321801E+15
Circumference
134346044.07891
Perimeter
85527348
Area
457182953494569
Diagonal
30238483.873851
Surface area
2743097720967414
Volume
9.7754113907995E+21
Space diagonal
37034428.043156
Perimeter
64145511
Area
1.9796602595175E+14
Altitude
18517214.021578
Surface area
1.9796602595175E+14
Volume
1.1520432805538E+21
Height
10079494.624617