20121356 is an even 8-digits composite number following 20121355
and preceding 20121357 . In scientific notation, it is written as 2.0121356 × 10^7.
The sum of its digits is 20. It has a total of 4 prime factors and 12 positive divisors.
There are 9736080 positive integers (up to 20121356) that are relatively prime to 20121356.
20121356 has 12 divisors, whose sum is 36348480
The reverse of 20121356 is 65312102
Previous prime number is 31
Is Prime? no
Number parity even
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty million one hundred twenty-one thousand three hundred fifty-six
Scientific notation
2.0121356 × 10^7
Engineering notation
2.0121356 × 10^6
Prime Factorization
2 × 2 × 31 × 162269
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10060678
Product of the distinct prime numbers
The prime factorization of 20121356 is 2 × 2 × 31 × 162269.
Since it has a total of 4 prime factors.
6 , 3 , 14 , 14 , 237 , 688 , 7248 , 667 , 29697 , 19513 , 846649 , 618737 , 2229121 , 3956258 , 89750883 , 69515492 , 175802340 , 62453137 , 7528350639 , 2062837991
n×2
40242712
n×3
60364068
n×4
80485424
n×5
100606780
n÷2
10060678
n÷3
6707118.6666667
n÷3
5030339
n÷5
4024271.2
n2
404868967278736
n3
8.1465126239678E+21
n4
1.6391888066535E+29
n5
3.298270152989E+36
2 √n
4485.6834484836
3 √n
271.98967305083
4 √n
66.975245042356
5 √n
28.888929496032
1 , 2 , 4 , 31 , 62 , 124 , 162269 , 324538 , 649076 , 5030339 , 10060678 , 20121356
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20121355
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20121356 can be divided by 12 positive divisors.
The sum of these divisors (counting 20121356) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001100110000011100001100
3
Ternary
1101212021022102
4
Quaternary
1030300130030
5
Quinary
20122340411
6
Senary
1555134232
8
Octal
114603414
10
Decimal
20121356
12
Duodecimal
68a4378
16
Hexadecimal
133070c
20
Vigesimal
65f37g
36
Base36
bz9qk
md5
bcc3a8fa5c67225935e028f8185eaf1a
sha1
2aa24480b02605e9a3c5f3597f1f64dcdca5720e
sha256
263272152a82f2b44f397606692964957883ef22fe7a19bc09764d726bf7b7ba
sha512
f574c9092a49d0498090a35337ed093fa18b71647bdd50e10ec701a4068cb6902bab2fbd033849cb93ce2320e726868c5b1c3ba2e66fad88262c05b03478da7a
ripemd-160
f844dcb8c836e0cc722f1ad88c46fe456b22f5bd
Diameter
40242712
Circumference
126426208.37973
Area
1.2719333732694E+15
Volume
3.4124032282445E+22
Surface area
5.0877334930775E+15
Circumference
126426208.37973
Perimeter
80485424
Area
404868967278736
Diagonal
28455894.548537
Surface area
2429213803672416
Volume
8.1465126239678E+21
Space diagonal
34851210.909181
Perimeter
60364068
Area
1.7531340543368E+14
Altitude
17425605.45459
Surface area
1.7531340543368E+14
Volume
9.6007571990491E+20
Height
9485298.1828458