2981808 is an even 7-digits composite number following 2981807
and preceding 2981809 . In scientific notation, it is written as 2.981808 × 10^6.
The sum of its digits is 36. It has a total of 6 prime factors and 20 positive divisors.
There are 993888 positive integers (up to 2981808) that are relatively prime to 2981808.
2981808 has 20 divisors, whose sum is 6419480
The reverse of 2981808 is 8081892
Previous prime number is 9
Is Prime? no
Number parity even
Number length 7
Sum of Digits 36
Digital Root 9
Name
two million nine hundred eighty-one thousand eight hundred eight
Scientific notation
2.981808 × 10^6
Engineering notation
2.981808 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 9 × 20707
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
372726
Product of the distinct prime numbers
The prime factorization of 2981808 is 2 × 2 × 2 × 2 × 9 × 20707.
Since it has a total of 6 prime factors.
10 , 10 , 63 , 47 , 356 , 129 , 2702 , 1421 , 31040 , 6348 , 512592 , 656086 , 2621882 , 4722935 , 1859902 , 66266431 , 755656327 , 827074315 , 8283618388 , 9869611800
n×2
5963616
n×3
8945424
n×4
11927232
n×5
14909040
n÷2
1490904
n÷3
993936
n÷3
745452
n÷5
596361.6
n2
8891178948864
n3
2.6511788519154E+19
n4
7.9053063100722E+25
n5
2.3572105597824E+32
2 √n
1726.7912438972
3 √n
143.93283905168
4 √n
41.554677761922
5 √n
19.719501642629
1 , 2 , 4 , 8 , 9 , 16 , 18 , 36 , 72 , 144 , 20707 , 41414 , 82828 , 165656 , 186363 , 331312 , 372726 , 745452 , 1490904 , 2981808
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2981807
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2981808 can be divided by 20 positive divisors.
The sum of these divisors (counting 2981808) is 1, the average is 0.05.
Base
System
Value
2
Binary
1011010111111110110000
3
Ternary
12121111021100
4
Quaternary
23113332300
5
Quinary
1230404213
6
Senary
143524400
8
Octal
13277660
10
Decimal
2981808
12
Duodecimal
bb9700
16
Hexadecimal
2d7fb0
20
Vigesimal
icea8
36
Base36
1rws0
md5
4e712f6580d18b25c562406c40d30642
sha1
3e234faddbde86941354f02a094362759c279c54
sha256
d06ff459219ab24d8563a13795642512b25a806f1b804173e2e84420746b19a3
sha512
132f3f405a2485e9edab21c0434f80b66f9419f7aecba6ac17106e6d826557fdd35d67ca17a3314ed3ba96b7d4bf51036e20be58d9328207ea42be594b4ec37c
ripemd-160
56314dfdcc7f1651566534c39e00f162cf0bab7a
Diameter
5963616
Circumference
18735252.214431
Area
27932462467503
Volume
1.110523200604E+20
Surface area
1.1172984987001E+14
Circumference
18735252.214431
Perimeter
11927232
Area
8891178948864
Diagonal
4216913.3139926
Surface area
53347073693184
Volume
2.6511788519154E+19
Space diagonal
5164642.9544153
Perimeter
8945424
Area
3849993419654.8
Altitude
2582321.4772077
Surface area
3849993419654.8
Volume
3.1244442405463E+18
Height
1405637.7713309