2155998 is an even 7-digits composite number following 2155997
and preceding 2155999 . In scientific notation, it is written as 2.155998 × 10^6.
The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors.
There are 655200 positive integers (up to 2155998) that are relatively prime to 2155998.
2155998 has 32 divisors, whose sum is 4701312
The reverse of 2155998 is 8995512
Previous prime number is 3
Is Prime? no
Number parity even
Number length 7
Sum of Digits 39
Digital Root 3
Name
two million one hundred fifty-five thousand nine hundred ninety-eight
Scientific notation
2.155998 × 10^6
Engineering notation
2.155998 × 10^6
Prime Factorization
2 × 131 × 13 × 3 × 211
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
2155998
Product of the distinct prime numbers
The prime factorization of 2155998 is 2 × 131 × 13 × 3 × 211.
Since it has a total of 5 prime factors.
9 , 5 , 52 , 45 , 409 , 688 , 6097 , 398 , 78007 , 32236 , 838811 , 123628 , 4046246 , 8265017 , 84502902 , 20090042 , 679569606 , 265477618 , 4063018711 , 7885884938
n×2
4311996
n×3
6467994
n×4
8623992
n×5
10779990
n÷2
1077999
n÷3
718666
n÷3
538999.5
n÷5
431199.6
n2
4648327376004
n3
1.002178452601E+19
n4
2.1606947394508E+25
n5
4.6584535368665E+31
2 √n
1468.3317063933
3 √n
129.186198272
4 √n
38.318816610033
5 √n
18.481178885298
1 , 2 , 3 , 6 , 13 , 26 , 39 , 78 , 131 , 211 , 262 , 393 , 422 , 633 , 786 , 1266 , 1703 , 2743 , 3406 , 5109 , 5486 , 8229 , 10218 , 16458 , 27641 , 55282 , 82923 , 165846 , 359333 , 718666 , 1077999 , 2155998
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
-2155997
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 2155998 can be divided by 32 positive divisors.
The sum of these divisors (counting 2155998) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1000001110010111011110
3
Ternary
11001112110210
4
Quaternary
20032113132
5
Quinary
1022442443
6
Senary
114113250
8
Octal
10162736
10
Decimal
2155998
12
Duodecimal
87b826
16
Hexadecimal
20e5de
20
Vigesimal
d99ji
36
Base36
1a7ku
md5
a2505ecffaff2ea648e70c72c6a888ad
sha1
e9bdc73157942132acd8094f64e6ede06d655022
sha256
882f9ee0dfa922b5f41c3e1320208e0430f34006fde49dc12f97aea4442631ee
sha512
910c681772cf2a6ee9a6902baf054a75bcd8859284d473cff1e5c61cfffba83e724242597644dbf0ca5c244ad489e723793b10166c55f765f0e2017c1346e908
ripemd-160
6af16400cb2ac0b527a857531627fbec0eaf7824
Diameter
4311996
Circumference
13546534.955909
Area
14603151135934
Volume
4.197915285703E+19
Surface area
58412604543738
Circumference
13546534.955909
Perimeter
8623992
Area
4648327376004
Diagonal
3049041.6120493
Surface area
27889964256024
Volume
1.002178452601E+19
Space diagonal
3734298.0770169
Perimeter
6467994
Area
2012784796363.1
Altitude
1867149.0385084
Surface area
2012784796363.1
Volume
1.1810786329887E+18
Height
1016347.2040164