21492931 is an odd 8-digits composite number following 21492930
and preceding 21492932 . In scientific notation, it is written as 2.1492931 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 21087352 positive integers (up to 21492931) that are relatively prime to 21492931.
21492931 has 4 divisors, whose sum is 21898512
The reverse of 21492931 is 13929412
Previous prime number is 53
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million four hundred ninety-two thousand nine hundred thirty-one
Scientific notation
2.1492931 × 10^7
Engineering notation
2.1492931 × 10^6
Prime Factorization
53 × 405527
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21492931
Product of the distinct prime numbers
The prime factorization of 21492931 is 53 × 405527.
Since it has a total of 2 prime factors.
3 , 1 , 32 , 63 , 733 , 111 , 4741 , 8239 , 49289 , 64420 , 74619 , 937926 , 5483285 , 1337076 , 72690645 , 11654117 , 640505694 , 616345905 , 4326545953 , 6186595404
n×2
42985862
n×3
64478793
n×4
85971724
n×5
107464655
n÷2
10746465.5
n÷3
7164310.3333333
n÷3
5373232.75
n÷5
4298586.2
n2
461946082970761
n3
9.9285752870108E+21
n4
2.1339418357203E+29
n5
4.586466463315E+36
2 √n
4636.046915207
3 √n
278.03440993594
4 √n
68.088522639333
5 √n
29.27245377661
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
-21492930
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 21492931 can be divided by 4 positive divisors.
The sum of these divisors (counting 21492931) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001111111010011000011
3
Ternary
1111102221202111
4
Quaternary
1101333103003
5
Quinary
21000233211
6
Senary
2044400151
8
Octal
121772303
10
Decimal
21492931
12
Duodecimal
7246057
16
Hexadecimal
147f4c3
20
Vigesimal
6e6c6b
36
Base36
cso1v
md5
5885c4d242ed788c0666052306808e7f
sha1
42011446df1c0baf4ce9e43ded98feb640f8143a
sha256
ba9aa107d830afb0bbbf2d8a5efef33752d0f679dc121d0165ebb206e32bac07
sha512
00b41e9ba00508ec448132a30386a9381e0d562bad5eda83a5647931eb47f4f6f2a967b417e3a446ecee0da6e43ebd9ee02c31fb7c38b7ecd3efea8999679c20
ripemd-160
a60117a347effa31cabdc0dfe25e3f6f1f7c4b50
Diameter
42985862
Circumference
135044068.26742
Area
1.4512464206155E+15
Volume
4.1588718909715E+22
Surface area
5.8049856824621E+15
Circumference
135044068.26742
Perimeter
85971724
Area
461946082970761
Diagonal
30395594.515349
Surface area
2771676497824566
Volume
9.9285752870108E+21
Space diagonal
37226848.495572
Perimeter
64478793
Area
2.000285215157E+14
Altitude
18613424.247786
Surface area
2.000285215157E+14
Volume
1.1700938188278E+21
Height
10131864.83845