21356786 is an even 8-digits composite number following 21356785
and preceding 21356787 . In scientific notation, it is written as 2.1356786 × 10^7.
The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors.
There are 9562080 positive integers (up to 21356786) that are relatively prime to 21356786.
21356786 has 16 divisors, whose sum is 35471520
The reverse of 21356786 is 68765312
Previous prime number is 11
Is Prime? no
Number parity even
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million three hundred fifty-six thousand seven hundred eighty-six
Scientific notation
2.1356786 × 10^7
Engineering notation
2.1356786 × 10^6
Prime Factorization
2 × 67 × 11 × 14489
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21356786
Product of the distinct prime numbers
The prime factorization of 21356786 is 2 × 67 × 11 × 14489.
Since it has a total of 4 prime factors.
8 , 2 , 81 , 69 , 2 , 521 , 8637 , 2273 , 5442 , 75936 , 527649 , 102315 , 2781827 , 7274568 , 13516203 , 41804774 , 54691937 , 216834570 , 2284868305 , 6036974123
n×2
42713572
n×3
64070358
n×4
85427144
n×5
106783930
n÷2
10678393
n÷3
7118928.6666667
n÷3
5339196.5
n÷5
4271357.2
n2
456112308249796
n3
9.7410929592569E+21
n4
2.0803843773696E+29
n5
4.4430323945225E+36
2 √n
4621.3402817797
3 √n
277.44610483783
4 √n
67.980440435317
5 √n
29.235274719264
1 , 2 , 11 , 22 , 67 , 134 , 737 , 1474 , 14489 , 28978 , 159379 , 318758 , 970763 , 1941526 , 10678393 , 21356786
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
-21356785
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 21356786 can be divided by 16 positive divisors.
The sum of these divisors (counting 21356786) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010001011110000011110010
3
Ternary
1111012001000002
4
Quaternary
1101132003302
5
Quinary
20431404121
6
Senary
2041430002
8
Octal
121360362
10
Decimal
21356786
12
Duodecimal
719b302
16
Hexadecimal
145e0f2
20
Vigesimal
6d9bj6
36
Base36
cpr02
md5
5657f7f2b7449e324e7a47f6bf5b521d
sha1
5c4a8d952e530b59a84ed2f403675fb3dd9313fe
sha256
f9b530f6b21b1c3f94134f607745e4aa8fa4c14d8b730e6bb1f80757f6f63a9b
sha512
8153232417c05d490ae67467be6af6819845c7396498e3761f86995367512551c32f79225cd4956e6834d4f8530cf42604779b7c486bf48ca95505197f29feeb
ripemd-160
ec774ee48d6b22453468c943c3ff398b7d673c31
Diameter
42713572
Circumference
134188644.00378
Area
1.4329190768094E+15
Volume
4.0803394771649E+22
Surface area
5.7316763072378E+15
Circumference
134188644.00378
Perimeter
85427144
Area
456112308249796
Diagonal
30203056.4099
Surface area
2736673849498776
Volume
9.7410929592569E+21
Space diagonal
36991038.438376
Perimeter
64070358
Area
1.9750242296154E+14
Altitude
18495519.219188
Surface area
1.9750242296154E+14
Volume
1.1479988146099E+21
Height
10067685.469967