21297988 is an even 8-digits composite number following 21297987
and preceding 21297989 . In scientific notation, it is written as 2.1297988 × 10^7.
The sum of its digits is 46. It has a total of 3 prime factors and 6 positive divisors.
There are 10648992 positive integers (up to 21297988) that are relatively prime to 21297988.
21297988 has 6 divisors, whose sum is 37271486
The reverse of 21297988 is 88979212
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty-one million two hundred ninety-seven thousand nine hundred eighty-eight
Scientific notation
2.1297988 × 10^7
Engineering notation
2.1297988 × 10^6
Prime Factorization
2 × 2 × 5324497
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
10648994
Product of the distinct prime numbers
The prime factorization of 21297988 is 2 × 2 × 5324497.
Since it has a total of 3 prime factors.
2 , 2 , 80 , 73 , 409 , 125 , 2268 , 2514 , 93137 , 48145 , 910645 , 390004 , 1552383 , 3161863 , 76053849 , 96749654 , 452472483 , 259612138 , 4544325664 , 7624339947
n×2
42595976
n×3
63893964
n×4
85191952
n×5
106489940
n÷2
10648994
n÷3
7099329.3333333
n÷3
5324497
n÷5
4259597.6
n2
453604292848144
n3
9.6608587858283E+21
n4
2.0575685449026E+29
n5
4.3822070178514E+36
2 √n
4614.9743227888
3 √n
277.19125578786
4 √n
67.93360230982
5 √n
29.21915926218
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21297987
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21297988 can be divided by 6 positive divisors.
The sum of these divisors (counting 21297988) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1010001001111101101000100
3
Ternary
1111002001100101
4
Quaternary
1101033231010
5
Quinary
20423013423
6
Senary
2040253444
8
Octal
121175504
10
Decimal
21297988
12
Duodecimal
7171284
16
Hexadecimal
144fb44
20
Vigesimal
6d24j8
36
Base36
cohms
md5
e888941a7cbedb6519685a205df740cf
sha1
03d0efe39af8872fc3a318b7a83db75707440d10
sha256
85fede2daac1bc9b2bb197dcc6a15523e251bc4be034cdf2eba7a2b6c97b6569
sha512
4e8070e5463fa2edc695020bd3cb60a9fa9e611701b9f3540da47cc0a16c6d5bddc7a701ea86f33f3666401562ee7f17cb8ab3cce3b55031d65892e1d53c38d1
ripemd-160
d2fbf75db2114516aca86221490da8491939aaf3
Diameter
42595976
Circumference
133819205.27409
Area
1.4250399140485E+15
Volume
4.0467310651902E+22
Surface area
5.7001596561941E+15
Circumference
133819205.27409
Perimeter
85191952
Area
453604292848144
Diagonal
30119903.480859
Surface area
2721625757088864
Volume
9.6608587858283E+21
Space diagonal
36889197.314992
Perimeter
63893964
Area
1.9641642043608E+14
Altitude
18444598.657496
Surface area
1.9641642043608E+14
Volume
1.1385431265908E+21
Height
10039967.826953