21961390 is an even 8-digits composite number following 21961389
and preceding 21961391 . In scientific notation, it is written as 2.1961390 × 10^7.
The sum of its digits is 31. It has a total of 5 prime factors and 32 positive divisors.
There are 7798560 positive integers (up to 21961390) that are relatively prime to 21961390.
21961390 has 32 divisors, whose sum is 44136576
The reverse of 21961390 is 09316912
Previous prime number is 43
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million nine hundred sixty-one thousand three hundred ninety
Scientific notation
2.1961390 × 10^7
Engineering notation
2.1961390 × 10^6
Prime Factorization
2 × 5 × 11 × 43 × 4643
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
21961390
Product of the distinct prime numbers
The prime factorization of 21961390 is 2 × 5 × 11 × 43 × 4643.
Since it has a total of 5 prime factors.
5 , 2 , 81 , 76 , 741 , 537 , 2020 , 9871 , 31880 , 43711 , 409196 , 128330 , 4253604 , 6805927 , 44938288 , 19357809 , 578536653 , 672280548 , 5871759367 , 4411336540
n×2
43922780
n×3
65884170
n×4
87845560
n×5
109806950
n÷2
10980695
n÷3
7320463.3333333
n÷3
5490347.5
n÷5
4392278
n2
482302650732100
n3
1.0592036610761E+22
n4
2.3261584690321E+29
n5
5.1085673340217E+36
2 √n
4686.2981125831
3 √n
280.0399177783
4 √n
68.456541780776
5 √n
29.398959833363
1 , 2 , 5 , 10 , 11 , 22 , 43 , 55 , 86 , 110 , 215 , 430 , 473 , 946 , 2365 , 4643 , 4730 , 9286 , 23215 , 46430 , 51073 , 102146 , 199649 , 255365 , 399298 , 510730 , 998245 , 1996490 , 2196139 , 4392278 , 10980695 , 21961390
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
-21961389
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 21961390 can be divided by 32 positive divisors.
The sum of these divisors (counting 21961390) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010011110001101010101110
3
Ternary
1112022202100211
4
Quaternary
1103301222232
5
Quinary
21110231030
6
Senary
2102413034
8
Octal
123615256
10
Decimal
21961390
12
Duodecimal
743117a
16
Hexadecimal
14f1aae
20
Vigesimal
6h539a
36
Base36
d2pim
md5
cbe577cb37f9e08368e613a0cf0ad0fa
sha1
0ab58ce78c14e3f8e6972701b882138adc586716
sha256
185bb9f9216976fa0a90655fcbc0b4616ebc06bac3c068f9b8dacf94e26cd533
sha512
431076e7bc5856fca860b17f99c39287e346de2e1e462fef363aa253f3db3cdea38c31f9a256e015113b8dbdd3cf35702ebf99501fa198996a92a31322a7e434
ripemd-160
b33775ce7bd565c6e2bbb2c7e143dbd8f7824803
Diameter
43922780
Circumference
137987482.97324
Area
1.5151984643468E+15
Volume
4.4367819203896E+22
Surface area
6.0607938573874E+15
Circumference
137987482.97324
Perimeter
87845560
Area
482302650732100
Diagonal
31058095.586565
Surface area
2893815904392600
Volume
1.0592036610761E+22
Space diagonal
38038243.284835
Perimeter
65884170
Area
2.0884317392329E+14
Altitude
19019121.642418
Surface area
2.0884317392329E+14
Volume
1.2482834856743E+21
Height
10352698.528855