21397929 is an odd 8-digits composite number following 21397928
and preceding 21397930 . In scientific notation, it is written as 2.1397929 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 12227376 positive integers (up to 21397929) that are relatively prime to 21397929.
21397929 has 8 divisors, whose sum is 32606400
The reverse of 21397929 is 92979312
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million three hundred ninety-seven thousand nine hundred twenty-nine
Scientific notation
2.1397929 × 10^7
Engineering notation
2.1397929 × 10^6
Prime Factorization
3 × 7 × 1018949
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21397929
Product of the distinct prime numbers
The prime factorization of 21397929 is 3 × 7 × 1018949.
Since it has a total of 3 prime factors.
6 , 1 , 75 , 13 , 878 , 508 , 2133 , 4414 , 34080 , 19928 , 694126 , 152831 , 7345472 , 7304144 , 5122148 , 82321953 , 624565471 , 900571159 , 610430146 , 1859761113
n×2
42795858
n×3
64193787
n×4
85591716
n×5
106989645
n÷2
10698964.5
n÷3
7132643
n÷3
5349482.25
n÷5
4279585.8
n2
457871365489041
n3
9.7974989698675E+21
n4
2.096461873348E+29
n5
4.4859942317107E+36
2 √n
4625.7895542275
3 √n
277.62415351936
4 √n
68.013157214082
5 √n
29.246530168453
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21397928
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21397929 can be divided by 8 positive divisors.
The sum of these divisors (counting 21397929) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001101000000110101001
3
Ternary
1111021010102220
4
Quaternary
1101220012221
5
Quinary
20434213204
6
Senary
2042344253
8
Octal
121500651
10
Decimal
21397929
12
Duodecimal
71bb089
16
Hexadecimal
14681a9
20
Vigesimal
6deeg9
36
Base36
cqmqx
md5
63b01a50b15c0e5bb1b813ba2dc753c8
sha1
8cd357a1f229bb792b5b670ce31929e26e52b433
sha256
5ddc69f4f7e01e47d3220aa88ec2873a85d7cdda0ab41183d44a37e68c1be2ba
sha512
6e7dfb30ad203a737c3d1b7637cc792e3372e0646d39dd27443f568ddce982b58b33bd35b0bed717caf6ea9806bd914b2bbb31fba728f2535beb41cb66c1ae5e
ripemd-160
0c38b2c307c5c608413e3f5a2d1104e7446b4b7f
Diameter
42795858
Circumference
134447153.09687
Area
1.4384453181095E+15
Volume
4.1039667716386E+22
Surface area
5.753781272438E+15
Circumference
134447153.09687
Perimeter
85591716
Area
457871365489041
Diagonal
30261241.398497
Surface area
2747228192934246
Volume
9.7974989698675E+21
Space diagonal
37062300.204751
Perimeter
64193787
Area
1.9826411708949E+14
Altitude
18531150.102376
Surface area
1.9826411708949E+14
Volume
1.1546463267103E+21
Height
10087080.466166