121395890 is an even 9-digits composite number following 121395889
and preceding 121395891 . In scientific notation, it is written as 1.21395890 × 10^8.
The sum of its digits is 38. It has a total of 5 prime factors and 32 positive divisors.
There are 36806400 positive integers (up to 121395890) that are relatively prime to 121395890.
121395890 has 32 divisors, whose sum is 217668864
The reverse of 121395890 is 098593121
Previous prime number is 37
Is Prime? no Number parity even Number length 9 Sum of Digits 38 Digital Root 2
Name
one hundred twenty-one million three hundred ninety-five thousand eight hundred ninety
Scientific notation
1.21395890 × 10^8
Engineering notation
1.21395890 × 10^6
Prime Factorization
2 × 55 × 7 × 37 × 4261
Composite number
ω Distinct Factors
5 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
121395890 Product of the distinct prime numbers
The prime factorization of 121395890 is 2 × 55 × 7 × 37 × 4261.
Since it has a total of 5 prime factors.
1 , 4 , 17 , 19 , 448 , 458 , 2034 , 2795 , 40322 , 75096 , 553769 , 646083 , 316276 , 9587426 , 67370521 , 63547923 , 300500410 , 636732773 , 399159990 , 4358963659
n×2
242791780
n×3
364187670
n×4
485583560
n×5
606979450
n÷2
60697945
n÷3
40465296.666667
n÷3
30348972.5
n÷5
24279178
n2
14736962108892100
n3
1.7890066311052E+24
n4
2.1717805219892E+32
n5
2.6364522935155E+40
2 √n11017.980304938
3 √n495.14758038775
4 √n104.96656755814
5 √n41.384793897461
1 , 2 , 7 , 14 , 37 , 55 , 74 , 110 , 259 , 385 , 518 , 770 , 2035 , 4070 , 4261 , 8522 , 14245 , 28490 , 29827 , 59654 , 157657 , 234355 , 315314 , 468710 , 1103599 , 1640485 , 2207198 , 3280970 , 8671135 , 17342270 , 60697945 , 121395890
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
-121395889 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 121395890 can be divided by 32 positive divisors.
The sum of these divisors (counting 121395890) is 1, the average is 0.03125.
Base
System
Value
2
Binary
111001111000101101010110010
3
Ternary
22110102112212002
4
Quaternary
13033011222302
5
Quinary
222034132030
6
Senary
20013534002
8
Octal
717055262
10
Decimal
121395890
12
Duodecimal
347a4302
16
Hexadecimal
73c5ab2
20
Vigesimal
1hie9ea
36
Base36
209xo2
md5
756b2eac01abba475f56fea41943418e
sha1
cc734d499ae40aa4516c975a11157544a3d5518b
sha256
2b17a20b9a721873e03f39a499f13b34c30844dd80c01ed2cb63c774646efdca
sha512
b63c7a6dc825344e4fb4c9c0910fa8f80081e7f0230576b1166e491698b5efdadb48e3577989c74138184ee92d373343b0800d6467ffcafd035425b53450ed9f
ripemd-160
a314cec3d9a37c8f00e3c9421c1a71c4d6391704
Diameter
242791780
Circumference
762752872.39999
Area
4.6297531897527E+16
Volume
7.4937734526715E+24
Surface area
1.8519012759011E+17
Circumference
762752872.39999
Perimeter
485583560
Area
14736962108892100
Diagonal
171679714.05435
Surface area
88421772653352600
Volume
1.7890066311052E+24
Space diagonal
210263849.31004
Perimeter
364187670
Area
6.3812917804546E+15
Altitude
105131924.65502
Surface area
6.3812917804546E+15
Volume
2.1083645340704E+23
Height
57226571.351451