21492915 is an odd 8-digits composite number following 21492914
and preceding 21492916 . In scientific notation, it is written as 2.1492915 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 11067392 positive integers (up to 21492915) that are relatively prime to 21492915.
21492915 has 8 divisors, whose sum is 23716800
The reverse of 21492915 is 51929412
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million four hundred ninety-two thousand nine hundred fifteen
Scientific notation
2.1492915 × 10^7
Engineering notation
2.1492915 × 10^6
Prime Factorization
15 × 29 × 49409
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21492915
Product of the distinct prime numbers
The prime factorization of 21492915 is 15 × 29 × 49409.
Since it has a total of 3 prime factors.
3 , 7 , 81 , 1 , 251 , 837 , 2420 , 350 , 69253 , 472 , 582922 , 95082 , 6224811 , 227473 , 73337922 , 48979778 , 187765213 , 888635119 , 1213421531 , 5361644746
n×2
42985830
n×3
64478745
n×4
85971660
n×5
107464575
n÷2
10746457.5
n÷3
7164305
n÷3
5373228.75
n÷5
4298583
n2
461945395197225
n3
9.9285531136154E+21
n4
2.1339354814392E+29
n5
4.5864493918057E+36
2 √n
4636.0451895986
3 √n
278.03434094346
4 √n
68.088509967531
5 √n
29.272449418346
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
-21492914
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 21492915 can be divided by 8 positive divisors.
The sum of these divisors (counting 21492915) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111010010110011
3
Ternary
1111102221201220
4
Quaternary
1101333102303
5
Quinary
21000233130
6
Senary
2044400123
8
Octal
121772263
10
Decimal
21492915
12
Duodecimal
7246043
16
Hexadecimal
147f4b3
20
Vigesimal
6e6c5f
36
Base36
cso1f
md5
345b1c62f8d7509e5f6f42da12a4f81e
sha1
15914acfdac2037462ab096d1fbfebf154015f48
sha256
e2802e79702185ec2c05903d32967152a6b7324d23e663ebb42ae06123e6f47e
sha512
38ac80de9871fd1d90a8a6aa950de5ef32dd350b389b7c5f6ccfac574797a2449640001f274093d4f3527e87192eb5b7271dade796cd39dfc4958a01bd25b6d1
ripemd-160
fcec45dc2e077ee4521e36ce3690f6398290aa9d
Diameter
42985830
Circumference
135043967.73646
Area
1.4512442599112E+15
Volume
4.1588626030013E+22
Surface area
5.8049770396449E+15
Circumference
135043967.73646
Perimeter
85971660
Area
461945395197225
Diagonal
30395571.887932
Surface area
2771672371183350
Volume
9.9285531136154E+21
Space diagonal
37226820.782759
Perimeter
64478745
Area
2.0002822370102E+14
Altitude
18613410.39138
Surface area
2.0002822370102E+14
Volume
1.170091205668E+21
Height
10131857.295977