21356789 is an odd 8-digits composite number following 21356788
and preceding 21356790 . In scientific notation, it is written as 2.1356789 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 20620320 positive integers (up to 21356789) that are relatively prime to 21356789.
21356789 has 4 divisors, whose sum is 22093260
The reverse of 21356789 is 98765312
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty-one million three hundred fifty-six thousand seven hundred eighty-nine
Scientific notation
2.1356789 × 10^7
Engineering notation
2.1356789 × 10^6
Prime Factorization
29 × 736441
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21356789
Product of the distinct prime numbers
The prime factorization of 21356789 is 29 × 736441.
Since it has a total of 2 prime factors.
5 , 3 , 70 , 63 , 573 , 772 , 7824 , 298 , 60487 , 97585 , 316548 , 760387 , 2896894 , 5781710 , 47612966 , 75919644 , 387746985 , 32413595 , 3165175848 , 1296748557
n×2
42713578
n×3
64070367
n×4
85427156
n×5
106783945
n÷2
10678394.5
n÷3
7118929.6666667
n÷3
5339197.25
n÷5
4271357.8
n2
456112436390521
n3
9.7410970642683E+21
n4
2.080385546301E+29
n5
4.4430355151E+36
2 √n
4621.3406063609
3 √n
277.44611782883
4 √n
67.98044282263
5 √n
29.235275540603
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21356788
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21356789 can be divided by 4 positive divisors.
The sum of these divisors (counting 21356789) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001011110000011110101
3
Ternary
1111012001000012
4
Quaternary
1101132003311
5
Quinary
20431404124
6
Senary
2041430005
8
Octal
121360365
10
Decimal
21356789
12
Duodecimal
719b305
16
Hexadecimal
145e0f5
20
Vigesimal
6d9bj9
36
Base36
cpr05
md5
8569086d760e62b38332a46850a22578
sha1
383aebe062326084b0a93341e2e98f888173ae06
sha256
86c99b09180d1385776ae3e262d6db1aa98c4c198c5fa47b8eb318e632b16de1
sha512
58cc9369c1a5ff06ffe56cc89cc93c66cf012d96a3a0ac192ec2b72688b68ea901d6afd94fe1dafb6fbe5b8e00c0586a0bc1dd128f06c2f9e4ef1e0039fcf2b8
ripemd-160
9056788ce584e5d69019f76e607322d0a0da4ef3
Diameter
42713578
Circumference
134188662.85333
Area
1.4329194793754E+15
Volume
4.080341196668E+22
Surface area
5.7316779175016E+15
Circumference
134188662.85333
Perimeter
85427156
Area
456112436390521
Diagonal
30203060.652541
Surface area
2736674618343126
Volume
9.7410970642683E+21
Space diagonal
36991043.634528
Perimeter
64070367
Area
1.975024784481E+14
Altitude
18495521.817264
Surface area
1.975024784481E+14
Volume
1.1479992983901E+21
Height
10067686.88418