21691495 is an odd 8-digits composite number following 21691494
and preceding 21691496 . In scientific notation, it is written as 2.1691495 × 10^7.
The sum of its digits is 37. It has a total of 4 prime factors and 16 positive divisors.
There are 14829984 positive integers (up to 21691495) that are relatively prime to 21691495.
21691495 has 16 divisors, whose sum is 29836800
The reverse of 21691495 is 59419612
Previous prime number is 443
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million six hundred ninety-one thousand four hundred ninety-five
Scientific notation
2.1691495 × 10^7
Engineering notation
2.1691495 × 10^6
Prime Factorization
5 × 7 × 443 × 1399
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21691495
Product of the distinct prime numbers
The prime factorization of 21691495 is 5 × 7 × 443 × 1399.
Since it has a total of 4 prime factors.
9 , 4 , 51 , 32 , 989 , 399 , 1903 , 981 , 98872 , 70938 , 573342 , 7356 , 7250756 , 3707980 , 71032873 , 98072923 , 542613229 , 910832730 , 1110173380 , 3344944592
n×2
43382990
n×3
65074485
n×4
86765980
n×5
108457475
n÷2
10845747.5
n÷3
7230498.3333333
n÷3
5422873.75
n÷5
4338299
n2
470520955335025
n3
1.0206302950045E+22
n4
2.2138996940938E+29
n5
4.8022794144938E+36
2 √n
4657.4129084718
3 √n
278.88800033461
4 √n
68.24524092178
5 √n
29.326342139204
1 , 5 , 7 , 35 , 443 , 1399 , 2215 , 3101 , 6995 , 9793 , 15505 , 48965 , 619757 , 3098785 , 4338299 , 21691495
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21691494
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21691495 can be divided by 16 positive divisors.
The sum of these divisors (counting 21691495) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010010101111110001100111
3
Ternary
1111211001010201
4
Quaternary
1102233301213
5
Quinary
21023111440
6
Senary
2052531331
8
Octal
122576147
10
Decimal
21691495
12
Duodecimal
7320b47
16
Hexadecimal
14afc67
20
Vigesimal
6fb8ef
36
Base36
cwx9j
md5
89d04b39e972d219ccb4d8ead3e4d3f2
sha1
95059a1f22aa26f044fef9e01b9f70adfefbead0
sha256
624dfce23ac049862906103945941679f6f180c9b011c093b043885d8b39df34
sha512
0cb58ce8129c551c58c702e80fd80e79a020ab89c9486e387bfb11ecd65d3b541e600db80812ec0ca0adce24e4f62c75fc79fe78e3bf8b0621a3035718f254ea
ripemd-160
d72576c025a421265c2fca7ecb65f83233f1ff57
Diameter
43382990
Circumference
136291682.67476
Area
1.4781851766406E+15
Volume
4.2752061824231E+22
Surface area
5.9127407065623E+15
Circumference
136291682.67476
Perimeter
86765980
Area
470520955335025
Diagonal
30676406.417148
Surface area
2823125732010150
Volume
1.0206302950045E+22
Space diagonal
37570771.432126
Perimeter
65074485
Area
2.0374155016653E+14
Altitude
18785385.716063
Surface area
2.0374155016653E+14
Volume
1.2028243378035E+21
Height
10225468.805716