21497784 is an even 8-digits composite number following 21497783
and preceding 21497785 . In scientific notation, it is written as 2.1497784 × 10^7.
The sum of its digits is 42. It has a total of 6 prime factors and 32 positive divisors.
There are 5583360 positive integers (up to 21497784) that are relatively prime to 21497784.
21497784 has 32 divisors, whose sum is 46070640
The reverse of 21497784 is 48779412
Previous prime number is 21
Is Prime? no Number parity even Number length 8 Sum of Digits 42 Digital Root 6
Name
twenty-one million four hundred ninety-seven thousand seven hundred eighty-four
Scientific notation
2.1497784 × 10^7
Engineering notation
2.1497784 × 10^6
Prime Factorization
2 × 2 × 2 × 11 × 21 × 11633
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
6 Total number of prime factors
rad Radical
5374446 Product of the distinct prime numbers
The prime factorization of 21497784 is 2 × 2 × 2 × 11 × 21 × 11633.
Since it has a total of 6 prime factors.
9 , 9 , 30 , 98 , 693 , 173 , 8393 , 5794 , 68383 , 46034 , 476373 , 791340 , 7532659 , 9276686 , 90524499 , 23823557 , 566525879 , 605311457 , 6516288405 , 8205441495
n×2
42995568
n×3
64493352
n×4
85991136
n×5
107488920
n÷2
10748892
n÷3
7165928
n÷3
5374446
n÷5
4299556.8
n2
462154716910656
n3
9.9353022787264E+21
n4
2.1358698236277E+29
n5
4.5916468120466E+36
2 √n4636.5702841648
3 √n278.0553346367
4 √n68.092365828812
5 √n29.273775572967
1 , 2 , 4 , 8 , 11 , 21 , 22 , 42 , 44 , 84 , 88 , 168 , 231 , 462 , 924 , 1848 , 11633 , 23266 , 46532 , 93064 , 127963 , 244293 , 255926 , 488586 , 511852 , 977172 , 1023704 , 1954344 , 2687223 , 5374446 , 10748892 , 21497784
32 divisors
τ Total Divisors
32 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-21497783 Sum of the proper positive divisors of n
A Arithmetic Mean
0.03125 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
32 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21497784 can be divided by 32 positive divisors.
The sum of these divisors (counting 21497784) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010010000000011110111000
3
Ternary
1111110012102020
4
Quaternary
1102000132320
5
Quinary
21000412114
6
Senary
2044434440
8
Octal
122003670
10
Decimal
21497784
12
Duodecimal
7248a20
16
Hexadecimal
14807b8
20
Vigesimal
6e7494
36
Base36
csrso
md5
37f041ff515e9f269029266cac563f59
sha1
bb0a3e0444c1b0d079ced184214b9fb85ecada0d
sha256
f3c3590fc471682200276fd7a73735c20ec81e47432a3939d15e5c545b56502a
sha512
6d395e37c659343b75dac9e953dcb71cdfd1fcd938622c36d95067cc51abb5069ec2e0b094b87e307c7d50e1a776bf3b91f66fd393c1a072be1265f71a7f644b
ripemd-160
0c14f992228391f0f9e2165d77362daa609c3b80
Diameter
42995568
Circumference
135074560.56572
Area
1.4519018634684E+15
Volume
4.1616896866721E+22
Surface area
5.8076074538736E+15
Circumference
135074560.56572
Perimeter
85991136
Area
462154716910656
Diagonal
30402457.693767
Surface area
2772928301463936
Volume
9.9353022787264E+21
Space diagonal
37235254.138141
Perimeter
64493352
Area
2.0011886266172E+14
Altitude
18617627.069071
Surface area
2.0011886266172E+14
Volume
1.1708866024043E+21
Height
10134152.564589