1998978 is an even 7-digits composite number following 1998977
and preceding 1998979 . In scientific notation, it is written as 1.998978 × 10^6.
The sum of its digits is 51. It has a total of 4 prime factors and 16 positive divisors.
There are 663920 positive integers (up to 1998978) that are relatively prime to 1998978.
1998978 has 16 divisors, whose sum is 4012416
The reverse of 1998978 is 8798991
Previous prime number is 431
Is Prime? no
Number parity even
Number length 7
Sum of Digits 51
Digital Root 6
Name
one million nine hundred ninety-eight thousand nine hundred seventy-eight
Scientific notation
1.998978 × 10^6
Engineering notation
1.998978 × 10^6
Prime Factorization
2 × 3 × 431 × 773
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1998978
Product of the distinct prime numbers
The prime factorization of 1998978 is 2 × 3 × 431 × 773.
Since it has a total of 4 prime factors.
6 , 8 , 74 , 57 , 165 , 577 , 7082 , 9908 , 58758 , 65040 , 226557 , 556750 , 2151446 , 9015537 , 60062136 , 93727634 , 673590179 , 713913148 , 9179830805 , 4605582933
n×2
3997956
n×3
5996934
n×4
7995912
n×5
9994890
n÷2
999489
n÷3
666326
n÷3
499744.5
n÷5
399795.6
n2
3995913044484
n3
7987742265836537352
n4
1.5967321059077E+25
n5
3.1918323516032E+31
2 √n
1413.852184636
3 √n
125.97064067777
4 √n
37.601225839539
5 √n
18.203781033219
1 , 2 , 3 , 6 , 431 , 773 , 862 , 1293 , 1546 , 2319 , 2586 , 4638 , 333163 , 666326 , 999489 , 1998978
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1998977
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1998978 can be divided by 16 positive divisors.
The sum of these divisors (counting 1998978) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101000000010000010
3
Ternary
10202120002020
4
Quaternary
13220002002
5
Quinary
1002431403
6
Senary
110502310
8
Octal
7500202
10
Decimal
1998978
12
Duodecimal
804996
16
Hexadecimal
1e8082
20
Vigesimal
c9h8i
36
Base36
16uf6
md5
95b354606de8ca192e82ba515f0af1ec
sha1
fc140ecfb57fa81e80eda06247f773e0433a8ce3
sha256
0f31796aa3307be97d47d31ebfd4839476b71f7f056ef43ad28e3d9554564256
sha512
b6a21cea8a8075ee4a95594b5100820018b57d9669c22beaa0d9a4ef6e1faf83161259508422be50bcea673ef57f9641ec0cd4db331a2da1ebd89878a58e9a47
ripemd-160
ac30d9a9107b2f840289e00acc3f11ea8a30162e
Diameter
3997956
Circumference
12559949.198975
Area
12553531064935
Volume
3.3458976561494E+19
Surface area
50214124259738
Circumference
12559949.198975
Perimeter
7995912
Area
3995913044484
Diagonal
2826981.7984854
Surface area
23975478266904
Volume
7987742265836537352
Space diagonal
3462331.4592124
Perimeter
5996934
Area
1730281103918.4
Altitude
1731165.7296062
Surface area
1730281103918.4
Volume
9.4136445375724E+17
Height
942327.26616182