21291249 is an odd 8-digits composite number following 21291248
and preceding 21291250 . In scientific notation, it is written as 2.1291249 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 11746560 positive integers (up to 21291249) that are relatively prime to 21291249.
21291249 has 8 divisors, whose sum is 23074920
The reverse of 21291249 is 94219212
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million two hundred ninety-one thousand two hundred forty-nine
Scientific notation
2.1291249 × 10^7
Engineering notation
2.1291249 × 10^6
Prime Factorization
21 × 29 × 34961
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21291249
Product of the distinct prime numbers
The prime factorization of 21291249 is 21 × 29 × 34961.
Since it has a total of 3 prime factors.
2 , 5 , 67 , 33 , 925 , 772 , 3391 , 7367 , 49175 , 77159 , 831533 , 605927 , 7534164 , 3867740 , 97869731 , 83899263 , 878526579 , 223164015 , 5581476323 , 2428159499
n×2
42582498
n×3
63873747
n×4
85164996
n×5
106456245
n÷2
10645624.5
n÷3
7097083
n÷3
5322812.25
n÷5
4258249.8
n2
453317283980001
n3
9.6516911692219E+21
n4
2.05496559955E+29
n5
4.3752784266454E+36
2 √n
4614.2441417853
3 √n
277.1620168925
4 √n
67.928227871668
5 √n
29.217309952838
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
-21291248
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 21291249 can be divided by 8 positive divisors.
The sum of these divisors (counting 21291249) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110000011110001
3
Ternary
1111001201002210
4
Quaternary
1101032003301
5
Quinary
20422304444
6
Senary
2040202333
8
Octal
121160361
10
Decimal
21291249
12
Duodecimal
71693a9
16
Hexadecimal
144e0f1
20
Vigesimal
6d1829
36
Base36
cocfl
md5
0e8bfb178ca588454bfc3aad4947b994
sha1
add2b5cd8389a972c07f7bb4c5df39a01721f058
sha256
72b6db8c9b9efd5073d1552e42214a6136b04d73eefee2f147a2c45b5948bbb9
sha512
80807e257ce6b3084b27787ac5a012e87032df3a5b0e57fd7721201029b597598d5be3d30d17e3033e8ed900448f253b3a1872407dca10c3cd7fe2fd1bdd7ad0
ripemd-160
565c4d3b86b27109d5d9206790fffa578f59c760
Diameter
42582498
Circumference
133776862.8883
Area
1.4241382490968E+15
Volume
4.042890942926E+22
Surface area
5.6965529963874E+15
Circumference
133776862.8883
Perimeter
85164996
Area
453317283980001
Diagonal
30110373.095663
Surface area
2719903703880006
Volume
9.6516911692219E+21
Space diagonal
36877525.0246
Perimeter
63873747
Area
1.9629214195062E+14
Altitude
18438762.5123
Surface area
1.9629214195062E+14
Volume
1.1374627126125E+21
Height
10036791.031888