21491452 is an even 8-digits composite number following 21491451
and preceding 21491453 . In scientific notation, it is written as 2.1491452 × 10^7.
The sum of its digits is 28. It has a total of 4 prime factors and 12 positive divisors.
There are 10697936 positive integers (up to 21491452) that are relatively prime to 21491452.
21491452 has 12 divisors, whose sum is 37777320
The reverse of 21491452 is 25419412
Previous prime number is 227
Is Prime? no
Number parity even
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million four hundred ninety-one thousand four hundred fifty-two
Scientific notation
2.1491452 × 10^7
Engineering notation
2.1491452 × 10^6
Prime Factorization
2 × 2 × 227 × 23669
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10745726
Product of the distinct prime numbers
The prime factorization of 21491452 is 2 × 2 × 227 × 23669.
Since it has a total of 4 prime factors.
5 , 8 , 84 , 17 , 627 , 486 , 5058 , 9296 , 93175 , 51278 , 968814 , 77440 , 248462 , 6466642 , 1519432 , 83187735 , 138196569 , 772881489 , 5171713239 , 4920540324
n×2
42982904
n×3
64474356
n×4
85965808
n×5
107457260
n÷2
10745726
n÷3
7163817.3333333
n÷3
5372863
n÷5
4298290.4
n2
461882509068304
n3
9.926525773281E+21
n4
2.1333545218323E+29
n5
4.5848886304942E+36
2 √n
4635.8874015662
3 √n
278.02803229911
4 √n
68.087351259732
5 √n
29.272050898558
1 , 2 , 4 , 227 , 454 , 908 , 23669 , 47338 , 94676 , 5372863 , 10745726 , 21491452
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21491451
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491452 can be divided by 12 positive divisors.
The sum of these divisors (counting 21491452) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010001111110111011111100
3
Ternary
1111102212201201
4
Quaternary
1101332323330
5
Quinary
21000211302
6
Senary
2044345244
8
Octal
121767374
10
Decimal
21491452
12
Duodecimal
7245224
16
Hexadecimal
147eefc
20
Vigesimal
6e68cc
36
Base36
csmws
md5
1c0a464105d914f548bc378a4750a566
sha1
83e22e871a790d2a1fcf10689857d1bd50da6a65
sha256
7efd1e399b3111c59f68fd2a1e6e7a9ab20e0eea90b42ace5d6481f5ec87806c
sha512
743545b9756c457beb844ea62d2d4669a8350c12bef06eaf796ed0f26b2d854a07d98610ee0efe9150202977ff5dbcf6bb1522c5a5b3a868265927bf2c7893c1
ripemd-160
070637209d9a8cc2ba5bb6dc1376ec1a32123e4f
Diameter
42982904
Circumference
135034775.43636
Area
1.4510466973106E+15
Volume
4.1580133926679E+22
Surface area
5.8041867892424E+15
Circumference
135034775.43636
Perimeter
85965808
Area
461882509068304
Diagonal
30393502.89349
Surface area
2771295054409824
Volume
9.926525773281E+21
Space diagonal
37224286.792428
Perimeter
64474356
Area
2.0000099320842E+14
Altitude
18612143.396214
Surface area
2.0000099320842E+14
Volume
1.1698522813183E+21
Height
10131167.631163