1998907421 is an odd 10-digits composite number following 1998907420
and preceding 1998907422 . In scientific notation, it is written as 1.998907421 × 10^9.
The sum of its digits is 50. It has a total of 4 prime factors and 12 positive divisors.
There are 1695681792 positive integers (up to 1998907421) that are relatively prime to 1998907421.
1998907421 has 12 divisors, whose sum is 2349236988
The reverse of 1998907421 is 1247098991
Previous prime number is 97
Is Prime? no Number parity odd Number length 10 Sum of Digits 50 Digital Root 5
Name
one billion nine hundred ninety-eight million nine hundred seven thousand four hundred twenty-one
Scientific notation
1.998907421 × 10^9
Engineering notation
1.998907421 × 10^9
Prime Factorization
7 × 7 × 97 × 420557
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
285558203 Product of the distinct prime numbers
The prime factorization of 1998907421 is 7 × 7 × 97 × 420557.
Since it has a total of 4 prime factors.
3 , 7 , 32 , 63 , 180 , 504 , 3153 , 3114 , 60739 , 53671 , 295614 , 746030 , 8213829 , 3115995 , 26629320 , 66397056 , 648408681 , 127220228 , 5133863291 , 1632300463
n×2
3997814842
n×3
5996722263
n×4
7995629684
n×5
9994537105
n÷2
999453710.5
n÷3
666302473.66667
n÷3
499726855.25
n÷5
399781484.2
n2
3995630877728871241
n3
7.986896213069E+27
n4
1.596506611106E+37
n5
3.1912689126154E+46
2 √n44709.142476679
3 √n1259.6915808908
4 √n211.44536522865
5 √n72.47004584642
1 , 7 , 49 , 97 , 679 , 4753 , 420557 , 2943899 , 20607293 , 40794029 , 285558203 , 1998907421
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
-1998907420 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 1998907421 can be divided by 12 positive divisors.
The sum of these divisors (counting 1998907421) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110111001001001110100000011101
3
Ternary
12011022022000111012
4
Quaternary
1313021032200131
5
Quinary
13043210014141
6
Senary
530203305005
8
Octal
16711164035
10
Decimal
1998907421
12
Duodecimal
47951b165
16
Hexadecimal
7724e81d
20
Vigesimal
1b4d38b1
36
Base36
x23iu5
md5
ad55fea5bcc0890df8ee12f13cedb50b
sha1
3995a5b243ab87b86b25c739cd2196928e58eb2b
sha256
e3addc2fe5792681bbc2709ca2b5caffce9c95810aaf193dc236942941a1ef20
sha512
37ee9c57c7a6b285d3b4c91c500fb96a6ea248cba9efabf9a62acc69db4ff2664ecd341de450e3fe5a4f6f1ccb1206d8370952696fd25fa8a9e898953c0ee771
ripemd-160
3a58b643c28c957f20948d3b5b5dba3cfcf4cc46
Diameter
3997814842
Circumference
12559505738.039
Area
1.255264461193E+19
Volume
3.3455432623949E+28
Surface area
5.0210578447718E+19
Circumference
12559505738.039
Perimeter
7995629684
Area
3995630877728871241
Diagonal
2826881984.7064
Surface area
2.3973785266373E+19
Volume
7.986896213069E+27
Space diagonal
3462209212.7985
Perimeter
5996722263
Area
1.7301589221294E+18
Altitude
1731104606.3992
Surface area
1.7301589221294E+18
Volume
9.4126474548237E+26
Height
942293994.90214