21491372 is an even 8-digits composite number following 21491371
and preceding 21491373 . In scientific notation, it is written as 2.1491372 × 10^7.
The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors.
There are 9210576 positive integers (up to 21491372) that are relatively prime to 21491372.
21491372 has 12 divisors, whose sum is 42982800
The reverse of 21491372 is 27319412
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million four hundred ninety-one thousand three hundred seventy-two
Scientific notation
2.1491372 × 10^7
Engineering notation
2.1491372 × 10^6
Prime Factorization
2 × 2 × 7 × 767549
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10745686
Product of the distinct prime numbers
The prime factorization of 21491372 is 2 × 2 × 7 × 767549.
Since it has a total of 4 prime factors.
2 , 3 , 64 , 1 , 302 , 47 , 9290 , 4813 , 14354 , 35371 , 616844 , 695551 , 3888216 , 8701290 , 72066045 , 27743030 , 419992783 , 172837258 , 9584943850 , 5439156268
n×2
42982744
n×3
64474116
n×4
85965488
n×5
107456860
n÷2
10745686
n÷3
7163790.6666667
n÷3
5372843
n÷5
4298274.4
n2
461879070442384
n3
9.9264149218915E+21
n4
2.1333227571272E+29
n5
4.5848032969486E+36
2 √n
4635.8787732209
3 √n
278.02768732055
4 √n
68.087287897381
5 √n
29.27202910601
1 , 2 , 4 , 7 , 14 , 28 , 767549 , 1535098 , 3070196 , 5372843 , 10745686 , 21491372
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
-21491371
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 21491372 can be divided by 12 positive divisors.
The sum of these divisors (counting 21491372) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010001111110111010101100
3
Ternary
1111102212121202
4
Quaternary
1101332322230
5
Quinary
21000210442
6
Senary
2044345032
8
Octal
121767254
10
Decimal
21491372
12
Duodecimal
7245178
16
Hexadecimal
147eeac
20
Vigesimal
6e688c
36
Base36
csmuk
md5
b78818759a49902aa29248bb2fc24ecf
sha1
9e8d125a1718d254c6acf342752ddc076d66540e
sha256
5324e370d1249869b54d61c0febab24480cfbbf0c45eb4cc64c17f959887c83e
sha512
91525c539573503bc670ae5c7043566641b40091cf27341c7fa267d70a307a05e3c89fb769dc43762e0253b304278ff01ebecaa305a634665cf139b4f5d0a909
ripemd-160
1e5955566d3eb0a35beb7ae049b73b5218d7fe7c
Diameter
42982744
Circumference
135034272.78153
Area
1.4510358945487E+15
Volume
4.1579669593464E+22
Surface area
5.8041435781947E+15
Circumference
135034272.78153
Perimeter
85965488
Area
461879070442384
Diagonal
30393389.756405
Surface area
2771274422654304
Volume
9.9264149218915E+21
Space diagonal
37224148.228363
Perimeter
64474116
Area
1.9999950423972E+14
Altitude
18612074.114182
Surface area
1.9999950423972E+14
Volume
1.1698392173568E+21
Height
10131129.918802