168981321 is an odd 9-digits composite number following 168981320
and preceding 168981322 . In scientific notation, it is written as 1.68981321 × 10^8.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 112654212 positive integers (up to 168981321) that are relatively prime to 168981321.
168981321 has 4 divisors, whose sum is 225308432
The reverse of 168981321 is 123189861
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 39
Digital Root 3
Name
one hundred sixty-eight million nine hundred eighty-one thousand three hundred twenty-one
Scientific notation
1.68981321 × 10^8
Engineering notation
1.68981321 × 10^6
Prime Factorization
3 × 56327107
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
168981321
Product of the distinct prime numbers
The prime factorization of 168981321 is 3 × 56327107.
Since it has a total of 2 prime factors.
9 , 8 , 37 , 81 , 747 , 271 , 5414 , 2207 , 48314 , 88451 , 218894 , 226310 , 173759 , 4691998 , 59737383 , 94048486 , 817227774 , 621062960 , 8967414064 , 7584536466
n×2
337962642
n×3
506943963
n×4
675925284
n×5
844906605
n÷2
84490660.5
n÷3
56327107
n÷3
42245330.25
n÷5
33796264.2
n2
28554686846905041
n3
4.8252087041313E+24
n4
8.1537014092481E+32
n5
1.3778232351743E+41
2 √n
12999.281557071
3 √n
552.85711138963
4 √n
114.01439188572
5 √n
44.214807665284
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-168981320
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 168981321 can be divided by 4 positive divisors.
The sum of these divisors (counting 168981321) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100100111001101001001
3
Ternary
102202222010210110
4
Quaternary
22010213031021
5
Quinary
321224400241
6
Senary
24433504533
8
Octal
1204471511
10
Decimal
168981321
12
Duodecimal
48712149
16
Hexadecimal
a127349
20
Vigesimal
2cg2d61
36
Base36
2slutl
md5
fea7a56c591ff5f563159348b4100944
sha1
dd051c42903762637fb736b310af1359d9ac45bb
sha256
399ea54f12842c0a99a1bb266252b3d008f929cccd89d86192a07a8b803f4949
sha512
112f1c088f02e5df5a927ef0dd0f12b832f02598adf1848059847070c2f9ab924b6c917456ccdccf44534de3d45bd7896d6f19c3f7dc6f5db8a1e42e0f946693
ripemd-160
03f7c55a6aae4d7f63e0f67e0a2f9c6810c979f8
Diameter
337962642
Circumference
1061740953.295
Area
8.9707194423794E+16
Volume
2.0211786955915E+25
Surface area
3.5882877769518E+17
Circumference
1061740953.295
Perimeter
675925284
Area
28554686846905041
Diagonal
238975675.94592
Surface area
171328121081430246
Volume
4.8252087041313E+24
Space diagonal
292684233.50211
Perimeter
506943963
Area
1.2364542103265E+16
Altitude
146342116.75105
Surface area
1.2364542103265E+16
Volume
5.6865629922194E+23
Height
79658558.648641