21497831 is an odd 8-digits prime number following 21497830
and preceding 21497832 . In scientific notation, it is written as 2.1497831 × 10^7.
The sum of its digits is 35. It has a total of 1 prime factors and 2 positive divisors.
There are 21497830 positive integers (up to 21497831) that are relatively prime to 21497831.
21497831 has 2 divisors, whose sum is 21497832
The reverse of 21497831 is 13879412
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 35 Digital Root 8
Name
twenty-one million four hundred ninety-seven thousand eight hundred thirty-one
Scientific notation
2.1497831 × 10^7
Engineering notation
2.1497831 × 10^6
Prime Factorization
21497831
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21497831 Product of the distinct prime numbers
The prime factorization of 21497831 is 21497831.
Since it has a total of 1 prime factors.
6 , 6 , 62 , 44 , 374 , 732 , 9228 , 3115 , 67529 , 82144 , 375328 , 65052 , 6846032 , 7895688 , 13154061 , 62063987 , 557511951 , 839443787 , 1762277205 , 4130717183
n×2
42995662
n×3
64493493
n×4
85991324
n×5
107489155
n÷2
10748915.5
n÷3
7165943.6666667
n÷3
5374457.75
n÷5
4299566.2
n2
462156737704561
n3
9.935367442684E+21
n4
2.1358885020572E+29
n5
4.5916970052069E+36
2 √n4636.5753525636
3 √n278.0555372714
4 √n68.092403045887
5 √n29.273788373042
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21497832 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10748916 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4636.5754604018 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999069674 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21497831 can be divided by 2 positive divisors.
The sum of these divisors (counting 21497831) is 21497832, the average is 10748916.
Base
System
Value
2
Binary
1010010000000011111100111
3
Ternary
1111110012110222
4
Quaternary
1102000133213
5
Quinary
21000412311
6
Senary
2044434555
8
Octal
122003747
10
Decimal
21497831
12
Duodecimal
7248a5b
16
Hexadecimal
14807e7
20
Vigesimal
6e74bb
36
Base36
csrtz
md5
49b15df7e7342f86e06cac0aa7b1d60b
sha1
7de0246f7e6356811b8b5e16084de118417da84e
sha256
d6bf06df6585dc6a760cb4ab9fb917f1b6057bd09bccce81bd259b12192c08fc
sha512
2062770e6f74a0fccbdcd5e85761887c67cf5c362237e2174388146598591c7c25e185e2b6bc041f6fa9712913c3531fd3dedcea644b16909f4667a0ac94de0c
ripemd-160
2855a43243207b35d441ad9b56d081c615c65bf1
Diameter
42995662
Circumference
135074855.87543
Area
1.4519082119797E+15
Volume
4.1617169824868E+22
Surface area
5.8076328479187E+15
Circumference
135074855.87543
Perimeter
85991324
Area
462156737704561
Diagonal
30402524.161805
Surface area
2772940426227366
Volume
9.935367442684E+21
Space diagonal
37235335.544529
Perimeter
64493493
Area
2.0011973769115E+14
Altitude
18617667.772265
Surface area
2.0011973769115E+14
Volume
1.1708942820503E+21
Height
10134174.720602